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颜色和背景

设置与前景色形成对比的背景色。

在此页

概述

颜色和背景类将我们的.text-*实用程序和.bg-*实用程序的功能结合在一个类中。使用我们的 Sass color-contrast()函数，我们自动确定特定background-color的color.

小心！目前不支持 CSS 原生color-contrast函数，因此我们通过 Sass 使用我们自己的函数。这意味着通过 CSS 变量自定义我们的主题颜色可能会导致这些实用程序出现颜色对比问题。

Primary with contrasting color

Secondary with contrasting color

Success with contrasting color

Danger with contrasting color

Warning with contrasting color

Info with contrasting color

Light with contrasting color

Dark with contrasting color

HTML

<div class="text-bg-primary p-3">Primary with contrasting color</div>
<div class="text-bg-secondary p-3">Secondary with contrasting color</div>
<div class="text-bg-success p-3">Success with contrasting color</div>
<div class="text-bg-danger p-3">Danger with contrasting color</div>
<div class="text-bg-warning p-3">Warning with contrasting color</div>
<div class="text-bg-info p-3">Info with contrasting color</div>
<div class="text-bg-light p-3">Light with contrasting color</div>
<div class="text-bg-dark p-3">Dark with contrasting color</div>

在组件上使用

使用它们代替组合.text-*和.bg-*类，例如徽章：

Primary Info

HTML

<span class="badge text-bg-primary">Primary</span>
<span class="badge text-bg-info">Info</span>

或者在卡片上：

Header

Some quick example text to build on the card title and make up the bulk of the card's content.

Header

Some quick example text to build on the card title and make up the bulk of the card's content.

HTML

<div class="card text-bg-primary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-bg-info mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>