css - Bootstrap 将导航栏元素右对齐

Question

如何将导航栏元素右对齐？

我想在右侧进行登录和注册。但我尝试的一切似乎都不起作用。

这是我到目前为止尝试过的:

• <div> <ul>周围具有属性:style="float: right"
• <div> <ul>周围具有属性:style="text-align: right"
• 在 <li> 上尝试了这两件事标签
• 用 !important 再次尝试了所有这些事情添加到最后
• 已更改 nav-item至 nav-right在<li>
• 添加了 pull-sm-right类到 <li>
• 添加了 align-content-end类到 <li>

这是我的代码:

<div id="app" class="container">
  <nav class="navbar navbar-toggleable-md navbar-light bg-faded">
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <a class="navbar-brand" href="#">Navbar</a>
    <ul class="navbar-nav">
      <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="#">Features</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Pricingg</a>
      </li>
    </ul>
    <ul class="navbar-nav " >
      <li  class="nav-item">
        <a class="nav-link" href="{{ url('/login') }}">Login</a>
      </li>
      <li  class="nav-item">
        <a class="nav-link" href="{{ url('/register') }}">Register</a>
      </li>
    </ul>
  </nav>
  @yield('content')
</div>

Answer 1

Bootstrap 5(2021 年更新)

在 Bootstrap 5 ( see this question ) 中，ml-auto 已替换为 ms-auto 以表示 start 而不是 左。由于导航栏仍然基于 flexbox，auto margins OR flexbox utility classes仍用于对齐导航栏内容。

例如，使用me-auto...

<nav class="navbar navbar-expand-lg navbar-light bg-light">
    <div class="container-fluid">
        <a class="navbar-brand" href="#">Brand</a>
        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarContent">
            <ul class="navbar-nav me-auto mb-2 mb-lg-0">
                <li class="nav-item">
                    <a class="nav-link active" href="#">Home</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Link</a>
                </li>
            </ul>
            <ul class="navbar-nav">
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false"> Menu </a>
                    <ul class="dropdown-menu dropdown-menu-end" aria-labelledby="navbarDropdown">
                        <li><a class="dropdown-item" href="#">Action</a></li>
                        <li><a class="dropdown-item" href="#">Another action</a></li>
                    </ul>
                </li>
            </ul>
        </div>
    </div>
</nav>

Bootstrap 5 right align Navbar content

---

Bootstrap 4(原始答案)

Bootstrap 有 many different ways to align navbar items . float-right 将不起作用，因为导航栏现在是 flexbox。

您可以使用 mr-auto 在 1st(左)navbar-nav 上自动设置右边距。或者，ml-auto 可以用在2nd(右)navbar-nav 上，或者如果你只是有一个navbar-nav。

<nav class="navbar navbar-expand-md navbar-light bg-light">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNav">
        <ul class="navbar-nav mr-auto">
            <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="#">Features</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Pricing</a>
            </li>
        </ul>
        <ul class="navbar-nav">
            <li class="nav-item">
                <a class="nav-link" href="#">Login</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Register</a>
            </li>
        </ul>
    </div>
</nav>

https://codeply.com/go/P0G393rzfm

还有 flexbox 实用程序。例如，在折叠菜单上使用 justify-content-end:

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Brand</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse justify-content-end" id="navbarNav">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Contact</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Pricing</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Download</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

或者当你有 2 个 navbar-nav 时，在 navbar-collapse 中使用 justify-content-between 可以使空间均匀在导航栏导航之间:

 <div class="navbar-collapse collapse justify-content-between">
     <ul class="navbar-nav mr-auto">
               ..
     </ul>
     <ul class="navbar-nav">
           ..
     </ul>
 </div>

---

Bootstrap 4.0 及更新版本的更新

从 Bootstrap 4 beta 开始，ml-auto 仍然可以将元素推到右边。请注意 navbar-toggleable- 类已更改为 navbar-expand-*

已更新 navbar right for Bootstrap 4

---

另一个常见的 Bootstrap 4 导航栏右对齐场景包括右侧的按钮，该按钮保留在移动折叠导航之外，因此它始终以所有宽度显示。

Right align button that is always visible

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