Bootstrap 4 居中导航栏

Question

使用新的 Bootstrap 4 v4.0.0-beta.2，但我找不到将内容置于导航栏中的方法。我已经尝试了一切！有任何想法吗？代码如下。

较早的答案是关于 bootstrap 4 的 ALPHA 版本，我都试过了！他们的解决方案不起作用。

<nav class="navbar navbar-expand-md navbar-light fixed-top">
    <a class="navbar-brand" href="/">
        <img src="/img/frontpage/logotest.png">logo
    </a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav">
            <li class="nav-item"><a class="nav-link" href="/">Home</a></li>
        </ul>
    </div>
</nav>

Answer 1

试试这个代码。它适用于 bootstrap 4。我刚刚将 d-flex justify-content-center 添加到 navbar-collapse。

<nav class="navbar navbar-expand-md navbar-light fixed-top">
    <a class="navbar-brand" href="/">
        <img src="/img/frontpage/logotest.png">logo
    </a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse d-flex justify-content-center" id="navbarsExampleDefault">
        <ul class="navbar-nav ">
            <li class="nav-item "><a class="nav-link" href="/">Home</a></li>
        </ul>
    </div>
</nav>

https://codepen.io/sodhisaab/pen/OObOZP

Answer 2

使用引导程序 4 将导航栏置于中心

您只需要添加 .justify-content-center 类

<nav class="navbar navbar-expand-md bg-dark navbar-dark">
  <a class="navbar-brand" href="#">my website</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse justify-content-center" id="collapsibleNavbar">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a class="nav-link" href="#">home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">about us</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">contact us</a>
      </li>    
    </ul>
  </div>  
</nav>