Question

我有引导程序代码，未显示所需的结果。菜单项分别显示在网页的右上角，而菜单项应显示在水平条中（如选项卡结构）。代码有什么问题？

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css">
    
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"></script>

<nav class = "navbar navbar-default">
  <div class = "container-fluid">
    <div class="navbar-header">
      <a href = "#" class = "navbar-brand">CMS System </a>
    </div>

    <ul class="nav navbar-nav">
      <li><a href="#">Home</a></li>
      <li><a href="#">Home</a></li>
      <li><a href="#">Home</a></li>
      <li><a href="#">Home</a></li>
      <li><a href="#">Home</a></li>
    </ul>


  </div>
</nav>

Answer 1

您必须添加一些额外的样式。您使用过的引导CSS的版本可能也有问题。

.navbar .container-fluid>.navbar-header {
  float: left;
  margin-right: 10px;
}
.navbar .navbar-nav {
  float: left;
  margin: 5px;
}
.nav>li {
  float: left;
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">

<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"></script>

<body>
    <nav class = "navbar navbar-default">
        <div class = "container-fluid">
            <div class="navbar-header">
                <a href = "#" class = "navbar-brand">CMS System </a>
            </div>
            <ul class="nav navbar-nav">
                <li><a href="#">Home</a></li>
                <li><a href="#">Home</a></li>
                <li><a href="#">Home</a></li>
                <li><a href="#">Home</a></li>
                <li><a href="#">Home</a></li>
            </ul>
        </div>
    </nav>
</body>

Answer 2

您可以更改

<nav class = "navbar navbar-default">

到

<nav class = "navbar navbar-expand">

使导航栏为水平

Answer 3

使用不需要CSS的最新版本的引导程序，您可以检查以下解决方案。

我希望这能解决问题。

注意：添加了一些CSS额外的类来设置导航背景的样式

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.2.1/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-expand-sm bg-dark navbar-dark justify-content-end">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent">
        <span class="navbar-toggler-icon"></span>
    </button>
  <div class="collapse navbar-collapse flex-grow-0" id="navbarSupportedContent">
    <ul class="navbar-nav text-right">
      <li class="nav-item active">
        <a class="nav-link" href="#">News</a>
      </li>
      <li class="nav-item active">
        <a class="nav-link" href="#">Products</a>
      </li>
    </ul>
  </div>
</nav>

Boostrap菜单项在垂直列表中单独显示

3 个答案: