html - 将上下文类应用于导航栏中的列表项

Question

考虑以下使用 Bootstrap 3 的 HTML 片段:

<nav class="navbar navbar-default">
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" href="#">Project name</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav navbar-right">
        <li><a href="./">Default <span class="sr-only">(current)</span></a></li>
        <li><a href="../navbar-static-top/">Static top</a></li>
        <li><a href="../navbar-fixed-top/">Fixed top</a></li>
      </ul>
    </div><!--/.nav-collapse -->
  </div>
</nav>

有没有办法将上下文类、信息、成功等应用于这些 li 元素？

如果我尝试添加，文本颜色不会改变。

Answer 1

按照 bootstrap 文档中的说明，将您的文本包装在 span 元素中。

Helper classes

Dealing with specificity Sometimes emphasis classes cannot be applied due to the specificity of another selector. In most cases, a sufficient workaround is to wrap your text in a <span> with the class.

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css');

<nav class="navbar navbar-default">
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" href="#">Project name</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav navbar-right">
        <li><a href="./"><span class="text-danger">Default</span> <span class="sr-only">(current)</span></a></li>
        <li><a href="../navbar-static-top/"><span class="text-success">Static top</span></a></li>
        <li><a href="../navbar-fixed-top/">Fixed top</a></li>
      </ul>
    </div><!--/.nav-collapse -->
  </div>
</nav>