Question

使用此引导程序代码无法使其居中...

尝试：浮动：居中，文本对齐：居中无效

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <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="#">Pricing</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
  </div>
</nav>

Answer 1

将justify-content: center;添加到您的 navbarNav ID。

Answer 2

Bootstrap有一个帮助程序类，可以将其添加到{p> {1}}中。

navbar

以下是文档链接：http://getbootstrap.com/docs/4.1/utilities/flex/

justify-content-center

Answer 3

这可以解决问题。看看下面的代码：

.navbar-nav {
    float:none;
    margin:0 auto;
    display: block;
    text-align: center;
}

.navbar-nav > li {
    display: inline-block;
    float:none;
}

.navbar-brand {
    margin-top: -2px; /* to set it to the same position (height) as the nav-items */
}

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav">
      <li>
        <a class="navbar-brand" href="#">Navbar</a>
      </li>
      <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">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
  </div>
</nav>

您必须切换到展开视图（整页）才能查看结果。

Answer 4

<nav class="navbar navbar-expand-lg navbar-light bg-light">

将此行替换为下面的行

<nav class="navbar navbar-expand-lg navbar-light bg-light text-center" style="display:block;">

我希望它能正常工作。

CSS中的Cant Center导航栏

4 个答案: