Bootstrap 5: Utilitários

Índice

Utilitários/classes auxiliares

Bootstrap 5 tem muitas classes utilitárias/auxiliares para estilizar elementos rapidamente sem usar nenhum código CSS.

Fronteiras

Use as classes border para adicionar ou remover bordas de um elemento:

Exemplo

<span class="border"></span>
<span class="border border-0"></span>
<span class="border border-top-0"></span>
<span class="border border-end-0"></span>
<span class="border border-bottom-0"></span>
<span class="border border-start-0"></span>
<br>
<span class="border-top"></span>
<span class="border-end"></span>
<span class="border-bottom"></span>
<span class="border-start"></span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #f9f9f9;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Use the border classes to add or remove borders from an element:</p> 

  <span class="border"></span>
  <span class="border border-0"></span>
  <span class="border border-top-0"></span>
  <span class="border border-end-0"></span>
  <span class="border border-bottom-0"></span>
  <span class="border border-start-0"></span>
  <br>
  
  <span class="border-top"></span>
  <span class="border-end"></span>
  <span class="border-bottom"></span>
  <span class="border-start"></span>
</div>

</body>
</html>

Largura da borda

Use .border-1 para .border-5 para alterar a largura da borda:

Exemplo

<span class="border border-1"></span>
<span class="border border-2"></span>
<span class="border border-3"></span>
<span class="border border-4"></span>
<span class="border border-5"></span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #f9f9f9;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Border Width</h2>
  <p>Use .border-1 to .border-5 to change the width of the border:</p> 

  <span class="border border-1"></span>
  <span class="border border-2"></span>
  <span class="border border-3"></span>
  <span class="border border-4"></span>
  <span class="border border-5"></span>
</div>

</body>
</html>

Cor da borda

Adicione uma cor à borda com qualquer uma das classes de cores de borda contextual:

Exemplo

<span class="border border-primary"></span>
<span class="border border-secondary"></span>
<span class="border border-success"></span>
<span class="border border-danger"></span>
<span class="border border-warning"></span>
<span class="border border-info"></span>
<span class="border border-light"></span>
<span class="border border-dark"></span>
<span class="border border-white"></span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  .border {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Use a contextual border color to add a color to the border:</p> 
  <span class="border border-primary"></span>
  <span class="border border-secondary"></span>
  <span class="border border-success"></span>
  <span class="border border-danger"></span>
  <span class="border border-warning"></span>
  <span class="border border-info"></span>
  <span class="border border-light"></span>
  <span class="border border-dark"></span>
  <span class="border border-white"></span>
</div>

</body>
</html>

Raio da Fronteira

Adicione cantos arredondados a um elemento com as classes arredondado:

Exemplo

<span class="rounded"></span>
<span class="rounded-top"></span>
<span class="rounded-end"></span>
<span class="rounded-bottom"></span>
<span class="rounded-start"></span>
<span class="rounded-circle"></span>
<span class="rounded-pill" style="width:130px"></span>
<span class="rounded-0"></span>
<span class="rounded-1"></span>
<span class="rounded-2"></span>
<span class="rounded-3"></span>
<span class="rounded-4"></span>
<span class="rounded-5"></span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #555;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Round the corner of an element with the rounded classes:</p> 
  <span class="rounded"></span>
  <span class="rounded-top"></span>
  <span class="rounded-end"></span>
  <span class="rounded-bottom"></span>
  <span class="rounded-start"></span>
  <span class="rounded-circle"></span>
  <span class="rounded-pill" style="width:130px"></span>
  <br>
  <span class="rounded-0"></span>
  <span class="rounded-1"></span>
  <span class="rounded-2"></span>
  <span class="rounded-3"></span>
  <span class="rounded-4"></span>
  <span class="rounded-5"></span>
</div>

</body>
</html>

Float e Clearfix

Flutue um elemento para a direita com a classe .float-end ou para a esquerda com .float-start e limpe os carros alegóricos com a classe .clearfix:

Exemplo

Float left Float right

<div class="clearfix">
  <span class="float-start">Float left</span>
  <span class="float-end">Float right</span>
</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Float</h2>
  <p>Float an element to the right with the .float-end class or to the left with .float-start, and clear floats with the .clearfix class.</p> 
  <div class="clearfix">
    <span class="float-start">Float left</span>
    <span class="float-end">Float right</span>
  </div>
</div>

</body>
</html>

Flutuadores responsivos

Flutue um elemento para a esquerda ou para a direita dependendo da largura da tela, com as classes float responsivas (.float-*-start|end - onde * é sm (>=576px), md (>=768px), lg (>=992px), xl (>=1200px) ou xxl (>=1400px) )):

Exemplo

Float right on small screens or wider

Float right on medium screens or wider

Float right on large screens or wider

Float right on extra large screens or wider

Float right on XXL screens or wider

Float none

<div class="float-sm-end">Float right on small screens or wider</div><br>
<div class="float-md-end">Float right on medium screens or wider</div><br>
<div class="float-lg-end">Float right on large screens or wider</div><br>
<div class="float-xl-end">Float right on extra large screens or wider</div><br>
<div class="float-xxl-end">Float right on XXL screens or wider</div><br>
<div class="float-none">Float none</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Responsive Floats</h2>
  <p>Float an element to the left or to the right depending on screen width, with the responsive float classes .float-*-left|right (where * is sm, md, lg, xl or xxl).</p>
  <p>Resize the browser window to see the effect.</p> 
  <div class="clearfix">
    <div class="float-sm-end">Float right on small screens or wider</div><br>
    <div class="float-md-end">Float right on medium screens or wider</div><br>
    <div class="float-lg-end">Float right on large screens or wider</div><br>
    <div class="float-xl-end">Float right on extra large screens or wider</div><br>
    <div class="float-xxl-end">Float right on XXL screens or wider</div><br>
    <div class="float-none">Float none</div>
  </div>
</div>

</body>
</html>

Alinhamento Central

Centralize um elemento com a classe .mx-auto (adiciona margin-left e margem direita: automático):

Exemplo

Centered

<div class="mx-auto bg-warning" style="width:150px">Centered</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Horizontal Centering</h1>
  <p>Center an element with the .mx-auto class:</p>
  <div class="mx-auto bg-warning" style="width:150px">Centered</div>
</div>

</body>
</html>

Largura

Defina a largura de um elemento com as classes w-* (.w-25, .w-50 , .w-75, .w-100, . w-auto e .mw-100):

Exemplo

Width 25%

Width 50%

Width 75%

Width 100%

Auto Width

Max Width 100%

<div class="w-25 bg-warning">Width 25%</div>
<div class="w-50 bg-warning">Width 50%</div>
<div class="w-75 bg-warning">Width 75%</div>
<div class="w-100 bg-warning">Width 100%</div>
<div class="w-auto bg-warning">Auto Width</div>
<div class="mw-100 bg-warning">Max Width 100%</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Width Utilities</h1>
  <p>Set the width of an element with the w-* classes:</p>
  <div class="w-25 bg-warning">Width 25%</div>
  <div class="w-50 bg-warning">Width 50%</div>
  <div class="w-75 bg-warning">Width 75%</div>
  <div class="w-100 bg-warning">Width 100%</div>
  <div class="w-auto bg-warning">Auto Width</div>
  <div class="mw-100 bg-warning">Max Width 100%</div>
</div>

</body>
</html>

Altura

Defina a altura de um elemento com as classes h-* (.h-25, .h-50 , .h-75, .h-100, . h-auto e .mh-100):

Exemplo

Height 25%

Height 50%

Height 75%

Height 100%

Auto Height

Max Height 100%

<div style="height:200px;background-color:#ddd">
  <div class="h-25 bg-warning">Height 25%</div>
  <div class="h-50 bg-warning">Height 50%</div>
  <div class="h-75 bg-warning">Height 75%</div>
  <div class="h-100 bg-warning">Height 100%</div>
  <div class="h-auto bg-warning">Auto Height</div>
  <div class="mh-100 bg-warning" style="height:500px">Max Height 100%</div>
</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Height Utilities</h1>
  <p>Set the height of an element with the h-* classes:</p>
  <div style="height:200px;background-color:#ddd">
    <div class="h-25 d-inline-block p-2 bg-warning">Height 25%</div>
    <div class="h-50 d-inline-block p-2 bg-warning">Height 50%</div>
    <div class="h-75 d-inline-block p-2 bg-warning">Height 75%</div>
    <div class="h-100 d-inline-block p-2 bg-warning">Height 100%</div>
    <div class="h-auto d-inline-block p-2 bg-warning">Auto Height</div>
    <div class="mh-100 d-inline-block p-2 bg-warning" style="height:500px">Max Height 100%</div>
  </div>
</div>

</body>
</html>

Espaçamento

Bootstrap 5 possui uma ampla variedade de classes utilitárias de margem e preenchimento responsivas. Eles funcionam para todos os pontos de interrupção: xs (<=576px), sm (>=576px), md (>=768px), lg (>=992px), xl (>=1200px) ou xxl (>=1400px)):

As classes são usadas no formato: {property}{sides}-{size} para xs e < código class="w3-codespan">{propriedade}{lados}-{ponto de interrupção}-{tamanho} para sm, md, lg, xl e ">xxl.

Onde propriedade é um dos seguintes:

m - define margem
p - define preenchimento

Onde lados é um dos seguintes:

t - define margin-top ou padding-top
b - define margem inferior ou padding-bottom
s - define margem esquerda ou preenchimento à esquerda
e - define margem à direita ou preenchimento à direita
x - define preenchimento à esquerda e preenchimento à direita ou margem esquerda e margem direita
y - define padding-top e padding-bottom ou margin-top e margin-bottom
em branco - define uma margem ou preenchimento em todos os 4 lados do elemento

Onde tamanho é um dos seguintes:

0 - define margem ou preenchimento como < código class="w3-codespan">0
1 - define margem ou preenchimento como < código class="w3-codespan">.25rem
2 - define margem ou preenchimento como < código class="w3-codespan">.5rem
3 - define margem ou preenchimento como < código class="w3-codespan">1rem
4 - define margem ou preenchimento como < código class="w3-codespan">1,5rem
5 - define margem ou preenchimento como < código class="w3-codespan">3rem
auto - define margem como automático

Exemplo

I only have a top padding (1.5rem)

I have a padding on all sides (3rem)

I have a margin on all sides (3rem) and a bottom padding (3rem)

<div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
<div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
<div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Spacing Utilities</h1>
  <p>Set the spacing of an element with the {property}{sides}-{breakpoint}-{size} classes. Omit breakpoint if you want the padding or margin to work on all screen sizes.</p>
  <div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
  <div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
  <div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>
</div>

</body>
</html>

Mais exemplos de espaçamento

`.m-# / m-*-#`

Descrição: margem em todos os lados

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Spacing Utilities</h1>
  <p>Set the spacing of an element with the {property}{sides}-{breakpoint}-{size} classes. Omit breakpoint if you want the padding or margin to work on all screen sizes.</p>
  <div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
  <div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
  <div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>
</div>

</body>
</html>

`.mt-# / mt-*-#`

Descrição: margem superior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Top Utilities</h1>
  <div class="mt-0 bg-warning">Margin Top 0</div>
  <div class="mt-1 bg-warning">Margin Top 1</div>
  <div class="mt-2 bg-warning">Margin Top 2</div>
  <div class="mt-3 bg-warning">Margin Top 3</div>
  <div class="mt-4 bg-warning">Margin Top 4</div>
  <div class="mt-5 bg-warning">Margin Top 5</div>
  <div class="mt-auto bg-warning" style="width:150px">Margin Top Auto</div>
  <br>

  <p>Responsive margin top utilities. Resize the browser window to see the effect:</p>
  <div class="mt-sm-5 bg-warning">Margin Top 5 on SM screens</div>
  <div class="mt-md-5 bg-warning">Margin Top 5 on MD screens</div>
  <div class="mt-lg-5 bg-warning">Margin Top 5 on LG screens</div>
  <div class="mt-xl-5 bg-warning">Margin Top 5 on XL screens</div>
</div>

</body>
</html>

`.mb-# / mb-*-#`

Descrição: margem inferior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Bottom Utilities</h1>
  <div class="mb-0 bg-warning">Margin Bottom 0</div>
  <div class="mb-1 bg-warning">Margin Bottom 1</div>
  <div class="mb-2 bg-warning">Margin Bottom 2</div>
  <div class="mb-3 bg-warning">Margin Bottom 3</div>
  <div class="mb-4 bg-warning">Margin Bottom 4</div>
  <div class="mb-5 bg-warning">Margin Bottom 5</div>
  <div class="mb-auto bg-warning" style="width:150px">Margin Bottom Auto</div>
  <br>

  <p>Responsive margin bottom utilities. Resize the browser window to see the effect:</p>
  <div class="mb-sm-5 bg-warning">Margin Bottom 5 on SM screens</div>
  <div class="mb-md-5 bg-warning">Margin Bottom 5 on MD screens</div>
  <div class="mb-lg-5 bg-warning">Margin Bottom 5 on LG screens</div>
  <div class="mb-xl-5 bg-warning">Margin Bottom 5 on XL screens</div>
</div>

</body>
</html>

`.ms-# / ms-*-#`

Descrição: margem esquerda

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Left Utilities</h1>
  <div class="ms-0 bg-warning">Margin Left 0</div>
  <div class="ms-1 bg-warning">Margin Left 1</div>
  <div class="ms-2 bg-warning">Margin Left 2</div>
  <div class="ms-3 bg-warning">Margin Left 3</div>
  <div class="ms-4 bg-warning">Margin Left 4</div>
  <div class="ms-5 bg-warning">Margin Left 5</div>
  <div class="ms-auto bg-warning" style="width:150px">Margin Left Auto</div>

  <p>Responsive margin left utilities. Resize the browser window to see the effect:</p>
  <div class="ms-sm-5 bg-warning">Margin Left 5 on SM screens</div>
  <div class="ms-md-5 bg-warning">Margin Left 5 on MD screens</div>
  <div class="ms-lg-5 bg-warning">Margin Left 5 on LG screens</div>
  <div class="ms-xl-5 bg-warning">Margin Left 5 on XL screens</div>
</div>

</body>
</html>

`.me-# / me-*-#`

Descrição: margem direita

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Right Utilities</h1>
  <div class="me-0 bg-warning">Margin Right 0</div>
  <div class="me-1 bg-warning">Margin Right 1</div>
  <div class="me-2 bg-warning">Margin Right 2</div>
  <div class="me-3 bg-warning">Margin Right 3</div>
  <div class="me-4 bg-warning">Margin Right 4</div>
  <div class="me-5 bg-warning">Margin Right 5</div>
  <div class="me-auto bg-warning" style="width:150px">Margin Right Auto</div>
  <br>
  
  <p>Responsive margin left utilities. Resize the browser window to see the effect:</p>
  <div class="me-sm-5 bg-warning">Margin Right on SM screens</div>
  <div class="me-md-5 bg-warning">Margin Right on MD screens</div>
  <div class="me-lg-5 bg-warning">Margin Right on LG screens</div>
  <div class="me-xl-5 bg-warning">Margin Right on XL screens</div>
</div>

</body>
</html>

`.mx-# / mx-*-#`

Descrição: margem esquerda e direita

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Left and Right Utilities</h1>
  <p>Margin X utilities:</p>
  <div class="mx-0 bg-warning">Margin X 0</div>
  <div class="mx-1 bg-warning">Margin X 1</div>
  <div class="mx-2 bg-warning">Margin X 2</div>
  <div class="mx-3 bg-warning">Margin X 3</div>
  <div class="mx-4 bg-warning">Margin X 4</div>
  <div class="mx-5 bg-warning">Margin X 5</div>
  <div class="mx-auto bg-warning" style="width:150px">Margin X Auto</div>
  <br>
  
  <p>Responsive margin x utilities. Resize the browser window to see the effect:</p>
  <div class="mx-sm-5 bg-warning">Margin X 5 on SM screens</div>
  <div class="mx-md-5 bg-warning">Margin X 5 on MD screens</div>
  <div class="mx-lg-5 bg-warning">Margin X 5 on LG screens</div>
  <div class="mx-xl-5 bg-warning">Margin X 5 on XL screens</div>
</div>

</body>
</html>

`.my-# / my-*-#`

Descrição: margem superior e inferior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Top and Bottom Utilities</h1>
  <p>Margin Y utilities:</p>
  <div class="my-0 bg-warning">Margin Y 0</div>
  <div class="my-1 bg-warning">Margin Y 1</div>
  <div class="my-2 bg-warning">Margin Y 2</div>
  <div class="my-3 bg-warning">Margin Y 3</div>
  <div class="my-4 bg-warning">Margin Y 4</div>
  <div class="my-5 bg-warning">Margin Y 5</div>
  <div class="my-auto bg-warning">Margin Y Auto</div>
  <br>
  
  <p>Responsive margin y utilities. Resize the browser window to see the effect:</p>
  <div class="my-sm-5 bg-warning">Margin Y 5 on SM screens</div>
  <div class="my-md-5 bg-warning">Margin Y 5 on MD screens</div>
  <div class="my-lg-5 bg-warning">Margin Y 5 on LG screens</div>
  <div class="my-xl-5 bg-warning">Margin Y 5 on XL screens</div>
</div>

</body>
</html>

`.p-# / p-*-#`

Descrição: preenchimento em todos os lados

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Utilities</h1>
  <div class="p-0 bg-warning">Padding 0</div>
  <div class="p-1 bg-success">Padding 1</div>
  <div class="p-2 bg-danger">Padding 2</div>
  <div class="p-3 bg-primary">Padding 3</div>
  <div class="p-4 bg-light">Padding 4</div>
  <div class="p-5 bg-info">Padding 5</div>
  <br>

  <p>Responsive padding utilities. Resize the browser window to see the effect:</p>
  <div class="p-sm-5 bg-warning">Padding 5 on SM screens</div>
  <div class="p-md-5 bg-success">Padding 5 on MD screens</div>
  <div class="p-lg-5 bg-danger">Padding 5 on LG screens</div>
  <div class="p-xl-5 bg-primary">Padding 5 on XL screens</div>
</div>

</body>
</html>

`.pt-# / pt-*-#`

Descrição: preenchimento superior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Top Utilities</h1>
  <div class="pt-0 bg-warning">Padding Top 0</div>
  <div class="pt-1 bg-success">Padding Top 1</div>
  <div class="pt-2 bg-danger">Padding Top 2</div>
  <div class="pt-3 bg-primary">Padding Top 3</div>
  <div class="pt-4 bg-light">Padding Top 4</div>
  <div class="pt-5 bg-info">Padding Top 5</div>
  <br>

  <p>Responsive padding top utilities. Resize the browser window to see the effect:</p>
  <div class="pt-sm-5 bg-warning">Padding Top 5 on SM screens</div>
  <div class="pt-md-5 bg-success">Padding Top 5 on MD screens</div>
  <div class="pt-lg-5 bg-danger">Padding Top 5 on LG screens</div>
  <div class="pt-xl-5 bg-primary">Padding Top 5 on XL screens</div>
</div>

</body>
</html>

`.pb-# / pb-*-#`

Descrição: preenchimento inferior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Bottom Utilities</h1>
  <div class="pb-0 bg-warning">Padding Bottom 0</div>
  <div class="pb-1 bg-success">Padding Bottom 1</div>
  <div class="pb-2 bg-danger">Padding Bottom 2</div>
  <div class="pb-3 bg-primary">Padding Bottom 3</div>
  <div class="pb-4 bg-light">Padding Bottom 4</div>
  <div class="pb-5 bg-info">Padding Bottom 5</div>
  <br>

  <p>Responsive padding bottom utilities. Resize the browser window to see the effect:</p>
  <div class="pb-sm-5 bg-warning">Padding Bottom 5 on SM screens</div>
  <div class="pb-md-5 bg-success">Padding Bottom 5 on MD screens</div>
  <div class="pb-lg-5 bg-danger">Padding Bottom 5 on LG screens</div>
  <div class="pb-xl-5 bg-primary">Padding Bottom 5 on XL screens</div>
</div>

</body>
</html>

`.ps-# / ps-*-#`

Descrição: preenchimento à esquerda

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Left Utilities</h1>
  <div class="ps-0 bg-warning">Padding Left 0</div>
  <div class="ps-1 bg-success">Padding Left 1</div>
  <div class="psl-2 bg-danger">Padding Left 2</div>
  <div class="ps-3 bg-primary">Padding Left 3</div>
  <div class="ps-4 bg-light">Padding Left 4</div>
  <div class="ps-5 bg-info">Padding Left 5</div>
  <br>

  <p>Responsive padding left utilities. Resize the browser window to see the effect:</p>
  <div class="ps-sm-5 bg-warning">Padding Left 5 on SM screens</div>
  <div class="ps-md-5 bg-success">Padding Left 5 on MD screens</div>
  <div class="ps-lg-5 bg-danger">Padding Left 5 on LG screens</div>
  <div class="ps-xl-5 bg-primary">Padding Left 5 on XL screens</div>
</div>

</body>
</html>

`.pe-# / pe-*-#`

Descrição: preenchimento à direita

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Right Utilities</h1>
  <div class="pe-0 bg-warning text-end">Padding Right 0</div>
  <div class="pe-1 bg-success text-end">Padding Right 1</div>
  <div class="pe-2 bg-danger text-end">Padding Right 2</div>
  <div class="pe-3 bg-primary text-end">Padding Right 3</div>
  <div class="pe-4 bg-light text-end">Padding Right 4</div>
  <div class="pe-5 bg-info text-end">Padding Right 5</div>
  <br>

  <p>Responsive padding right utilities. Resize the browser window to see the effect:</p>
  <div class="pe-sm-5 bg-warning text-end">Padding Right 5 on SM screens</div>
  <div class="pe-md-5 bg-success text-end">Padding Right 5 on MD screens</div>
  <div class="pe-lg-5 bg-danger text-end">Padding Right 5 on LG screens</div>
  <div class="pe-xl-5 bg-primary text-end">Padding Right 5 on XL screens</div>
</div>

</body>
</html>

`.py-# / py-*-#`

Descrição: preenchimento superior e inferior

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Top and Bottom Utilities</h1>
  <p>Padding y utilities:</p>
  <div class="py-0 bg-warning">Padding Y 0</div>
  <div class="py-1 bg-success">Padding Y 1</div>
  <div class="py-2 bg-danger">Padding Y 2</div>
  <div class="py-3 bg-primary">Padding Y 3</div>
  <div class="py-4 bg-light">Padding Y 4</div>
  <div class="py-5 bg-info">Padding Y 5</div>
  <br>

  <p>Responsive padding y utilities. Resize the browser window to see the effect:</p>
  <div class="py-sm-5 bg-warning">Padding Y 5 on SM screens</div>
  <div class="py-md-5 bg-success">Padding Y 5 on MD screens</div>
  <div class="py-lg-5 bg-danger">Padding Y 5 on LG screens</div>
  <div class="py-xl-5 bg-primary">Padding Y 5 on XL screens</div>
</div>

</body>
</html>

`.px-# / px-*-#`

Descrição: preenchimento à esquerda e à direita

Tente

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Left and Right Utilities</h1>
  <p>Padding x utilities:</p>
  <div class="px-0 bg-warning">Padding X 0</div>
  <div class="px-1 bg-success">Padding X 1</div>
  <div class="px-2 bg-danger">Padding X 2</div>
  <div class="px-3 bg-primary">Padding X 3</div>
  <div class="px-4 bg-light">Padding X 4</div>
  <div class="px-5 bg-info">Padding X 5</div>
  <br>

  <p>Responsive padding x utilities. Resize the browser window to see the effect:</p>
  <div class="px-sm-5 bg-warning">Padding X 5 on SM screens</div>
  <div class="px-md-5 bg-success">Padding X 5 on MD screens</div>
  <div class="px-lg-5 bg-danger">Padding X 5 on LG screens</div>
  <div class="px-xl-5 bg-primary">Padding X 5 on XL screens</div>
</div>

</body>
</html>

Sombras

Use as classes shadow- para adicionar sombras a um elemento:

Exemplo

No shadow

Small shadow

Default shadow

Large shadow

<div class="shadow-none p-4 mb-4 bg-light">No shadow</div>
<div class="shadow-sm p-4 mb-4 bg-white">Small shadow</div>
<div class="shadow p-4 mb-4 bg-white">Default shadow</div>
<div class="shadow-lg p-4 mb-4 bg-white">Large shadow</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Shadows</h1>
  <p>Use the shadow- classes to to add shadows to an element:</p>
  <div class="shadow-none p-4 mb-4 bg-light">No shadow</div>
  <div class="shadow-sm p-4 mb-4 bg-white">Small shadow</div>
  <div class="shadow p-4 mb-4 bg-white">Default shadow</div>
  <div class="shadow-lg p-4 mb-4 bg-white">Large shadow</div>
</div>

</body>
</html>

Alinhamento vertical

Use as classes align- para alterar o alinhamento dos elementos (funciona apenas em elementos inline, inline-block, inline-table e table cell):

Exemplo

baseline top middle bottom text-top text-bottom

<span class="align-baseline">baseline</span>
<span class="align-top">top</span>
<span class="align-middle">middle</span>
<span class="align-bottom">bottom</span>
<span class="align-text-top">text-top</span>
<span class="align-text-bottom">text-bottom</span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Vertical Align</h1>
  <p>Change the alignment of elements with the align classes (only works on inline, inline-block, inline-table and table cell elements):</p>
  <span class="align-baseline">baseline</span>
  <span class="align-top">top</span>
  <span class="align-middle">middle</span>
  <span class="align-bottom">bottom</span>
  <span class="align-text-top">text-top</span>
  <span class="align-text-bottom">text-bottom</span>
</div>

</body>
</html>

Proporção da tela

Crie vídeos ou apresentações de slides responsivos com base na largura do pai.

Adicione a classe .ratio junto com uma proporção de sua escolha .ratio-* a um elemento pai, e adicione o embed (vídeo ou iframe) dentro dele:

Exemplo

<!-- Aspect ratio 1:1 -->
<div class="ratio ratio-1x1">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 4:3 -->
<div class="ratio ratio-4x3">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 16:9 -->
<div class="ratio ratio-16x9">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 21:9 -->
<div class="ratio ratio-21x9">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Aspect Ratio</h2>
  <p>Create a responsive video and scale it nicely to the parent element.</p>
  
  <h2>Aspect ratio 1:1</h2>
  <div class="ratio ratio-1x1">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
  <br>
  
  <h2>Aspect ratio 4:3</h2>
  <div class="ratio ratio-4x3">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div> 
  <br>
  
  <h2>Aspect ratio 16:9</h2>
  <div class="ratio ratio-16x9">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
  <br>
    
  <h2>Aspect ratio 21:9</h2>
  <div class="ratio ratio-21x9">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
</div>

</body>
</html>

Visibilidade

Use as classes .visible ou .invisible para controlar a visibilidade dos elementos. Observação: essas classes não alteram o valor de exibição do CSS. Eles apenas adicionam visibility:visible ou visibility:hidden:

Exemplo

I am visible

I am invisible

     <div class="visible">I am visible</div>
<div class="invisible">I am 
      invisible</div>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Visibility</h1>
  <p>Use the .visible or .invisible classes to control the visibility of elements. Note: These classes do not change the CSS display value. They only add visibility:visible or visibility:hidden to an element:</p>
  <div class="visible bg-success">I am visible</div>
  <div class="invisible bg-warning">I am invisible</div>
</div>

</body>
</html>

Fechar ícone

Use a classe .btn-close para estilizar um ícone de fechamento. Isso é frequentemente usado para alertas e modais.

Exemplo

     <button type="button" class="btn-close"></button>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Close Icon</h1>
  <p>Use the .close class to style a close icon. This is often used for alerts and modals. Note that we use the times; symbol to create the actual icon (a better looking "x"). Also note that it is right-aligned by default:</p>
  <div class="clearfix">
    <button type="button" class="close">&amp;times;</button>
  </div>
</div>

</body>
</html>

Leitores de tela

Use a classe .visually-hidden para ocultar um elemento em todos os dispositivos, exceto leitores de tela:

Exemplo

<span class="visually-hidden">I will be hidden on all screens except for screen   readers.</span>

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Screen readers</h2>
  <p>Use the .sr-only class to hide an element on all devices, except screen readers:</p>
  <span class="visually-hidden">I will be hidden on all screens except for screen readers.</span>
</div>

</body>
</html>

Cores

Conforme descrito no capítulo Cores, aqui está uma lista de todas as classes de cores de texto e de fundo:

As classes para cores de texto são:

.text-muted
.text-primary
.text-success
.text-info
.text-warning
.text-danger
.text-secondary
.text-white
.text-dark
.text-body
.text-light

O .text-body é a cor padrão do corpo (geralmente preto).

Exemplo

This text is muted.

This text is important.

This text indicates success.

This text represents some information.

This text represents a warning.

This text represents danger.

Secondary text.

Dark grey text.

Body text.

Light grey text.

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Colors</h2>
  <p>Use the contextual classes to provide &quot;meaning through colors&quot;:</p>
  <p class="text-muted">This text is muted.</p>
  <p class="text-primary">This text is important.</p>
  <p class="text-success">This text indicates success.</p>
  <p class="text-info">This text represents some information.</p>
  <p class="text-warning">This text represents a warning.</p>
  <p class="text-danger">This text represents danger.</p>
  <p class="text-secondary">Secondary text.</p>
  <p class="text-dark">This text is dark grey.</p>
  <p class="text-body">Default body color (often black).</p>
  <p class="text-light">This text is light grey (on white background).</p>
  <p class="text-white">This text is white (on white background).</p>
</div>

</body>
</html>

Classes de texto contextuais também podem ser usadas em links:

Exemplo

Muted link. Primary link. Success link. Info link. Warning link. Danger link. Secondary link. Dark grey link. Body/black link. Light grey link.

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Link Colors</h2>
  <a href="#" class="text-muted">Muted link.</a>
  <a href="#" class="text-primary">Primary link.</a>
  <a href="#" class="text-success">Success link.</a>
  <a href="#" class="text-info">Info link.</a>
  <a href="#" class="text-warning">Warning link.</a>
  <a href="#" class="text-danger">Danger link.</a>
  <a href="#" class="text-secondary">Secondary link.</a>
  <a href="#" class="text-dark">Dark grey link.</a>
  <a href="#" class="text-body">Body/black link.</a>
  <a href="#" class="text-light">Light grey link.</a>
</div>

</body>
</html>

Você também pode adicionar 50% de opacidade para texto em preto ou branco com .text-black-50 ou .text-white- 50 aulas:

Exemplo

Black text with 50% opacity on white background

White text with 50% opacity on black background

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Opacity Text Colors</h2>
  <p>Add 50% opacity for black or white text with the .text-black-50 or .text-white-50 classes:</p>
  <p class="text-black-50">Black text with 50% opacity on white background</p>
  <p class="text-white-50 bg-dark">White text with 50% opacity on black background</p>
</div>

</body>
</html>

Cores de fundo

As classes para cores de fundo são:

bg-primary
.bg-success
.bg-info
.bg-warning
.bg-danger
.bg-secondary
.bg-dark
.bg-light

Exemplo

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Backgrounds</h2>
  <p>Use the contextual background classes to provide &quot;meaning through colors&quot;.</p>
  <div class="bg-primary p-3"></div>
  <div class="bg-success p-3"></div>
  <div class="bg-info p-3"></div>
  <div class="bg-warning p-3"></div>
  <div class="bg-danger p-3"></div>
  <div class="bg-secondary p-3"></div>
  <div class="bg-dark p-3"></div>
  <div class="bg-light p-3"></div>
</div>

</body>
</html>

As classes .bg-color acima não funcionam bem com texto, ou pelo menos você deve especificar um .text-color para obter a cor de texto correta para cada plano de fundo.

No entanto, você pode usar as classes .text-bg-color e o Bootstrap tratará automaticamente a cor de texto apropriada para cada cor de fundo:

Exemplo

This text is important.

This text indicates success.

This text represents some information.

This text represents a warning.

This text represents danger.

Secondary background color.

Dark grey background color.

Light grey background color.

Experimente você mesmo →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Background Color with Contrasting Text Color</h2>
  <p class="text-bg-primary">This text is important.</p>
  <p class="text-bg-success">This text indicates success.</p>
  <p class="text-bg-info">This text represents some information.</p>
  <p class="text-bg-warning">This text represents a warning.</p>
  <p class="text-bg-danger">This text represents danger.</p>
  <p class="text-bg-secondary">Secondary background color.</p>
  <p class="text-bg-dark">Dark grey background color.</p>
  <p class="text-bg-light">Light grey background color.</p>
</div>

</body>
</html>