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html - 为什么 navbar-right 既不能正常工作，也不能向右浮动

问题描述

navbar-right 不起作用，我查看了具有相同问题的其他问题，但找不到使其起作用的方法。我什至尝试在 li 元素上浮动，但不起作用。

<nav class="navbar navbar-expand-lg navbar-light bg-transparent fixed-top">
      <a class="navbar-brand" href="#">Navbar</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div id="nav-content" class="collapse navbar-collapse" id="navbarSupportedContent">
        <ul class="navbar-nav mr-auto navbar-right">
          <li class="nav-item active">
            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
              Dropdown
            </a>
            <div class="dropdown-menu" aria-labelledby="navbarDropdown">
              <a class="dropdown-item" href="#">Action</a>
              <a class="dropdown-item" href="#">Another action</a>
              <div class="dropdown-divider"></div>
              <a class="dropdown-item" href="#">Something else here</a>
            </div>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Disabled</a>
          </li>
        </ul>
      </div>
    </nav>
    <div id="view" class="full-page-cover"></div>

标签： html

解决方案

假设您为此使用引导程序，如果您想要将导航栏与页面的最右侧对齐，则应<ul class="navbar-nav mr-auto navbar-right"> 将<ul class="navbar-nav ml-auto navbar-right">. 在引导程序中，mr-auto 在元素右侧添加边距，ml-auto 在元素左侧添加边距。

所以最终的代码应该是，

<nav class="navbar navbar-expand-lg navbar-light bg-transparent fixed-top">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

    <div id="nav-content" class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav ml-auto navbar-right">
        <li class="nav-item active">
          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            Dropdown
          </a>
          <div class="dropdown-menu" aria-labelledby="navbarDropdown">
            <a class="dropdown-item" href="#">Action</a>
            <a class="dropdown-item" href="#">Another action</a>
            <div class="dropdown-divider"></div>
            <a class="dropdown-item" href="#">Something else here</a>
          </div>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Disabled</a>
        </li>
      </ul>
    </div>
  </nav>
  <div id="view" class="full-page-cover"></div>

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