css - 在 Bootstrap 4 (alpha 5) 中将导航栏内容居中

Question

我试图在 Bootstrap 4, alpha 5 中将导航栏内容居中。我在谷歌上搜索了一下，我想可能有一些技巧涉及 d-block 和 mx-自动。

但是我无法找到如何将导航链接居中以便它们完全居中，而不仅仅是在它们周围添加一个容器。

我正在玩的示例导航栏代码:。

<nav class="navbar navbar-light bg-faded">
  <ul class="nav 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="#">Pricing</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        Dropdown link
      </a>
      <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
        <a class="dropdown-item" href="#">Action</a>
        <a class="dropdown-item" href="#">Another action</a>
        <a class="dropdown-item" href="#">Something else here</a>
      </div>
    </li>
  </ul>
</nav>

JSFiddle if you like

Answer 1

在 Bootstrap 4 中使 Navbar 元素居中更简单，并且不需要额外的标记。

<nav class="navbar navbar-expand-md navbar-light bg-faded">
  <ul class="navbar-nav mx-auto">
    <li class="nav-item active text-center">
      <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
    </li>
    <li class="nav-item text-center">
      <a class="nav-link" href="#">Features</a>
    </li>
    <li class="nav-item text-center">
      <a class="nav-link" href="#">Pricing</a>
    </li>
    <li class="nav-item dropdown text-center">
      <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        Dropdown link
      </a>
      <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
        <a class="dropdown-item" href="#">Action</a>
        <a class="dropdown-item" href="#">Another action</a>
        <a class="dropdown-item" href="#">Something else here</a>
      </div>
    </li>
  </ul>
</nav>

Bootstrap 4 Center Navbar Demo (针对 v4.0.0 更新)

如果您只需要将特定元素居中，例如品牌或链接，see this answer