下拉菜单的语义 UI cs 和 js 文件

Semantic UI cs and js files for dropdown menus

我正在创建语义 UI 2.1.7 下拉菜单,但它没有显示。我有下面的代码,似乎我包含了必要的 css 和 js 文件。我是否缺少其他文件?我是否需要为每个组件包含 css 和 js 文件,而不是只包含一个?

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8" />
  <title>Semantic UI Sign In/Sign Up Form</title>

  <link href="semantic.css" rel="stylesheet" type="text/css" />

  <style type="text/css">

  </style>

</head>
<body>
  <div class="ui inverted menu">
  <div class="header item">Brand</div>
  <div class="active item">Link</div>
  <a class="item">Link</a>
  <div class="ui dropdown item">
    Dropdown
    <i class="dropdown icon"></i>
    <div class="menu">
      <div class="item">Action</div>
      <div class="item">Another Action</div>
      <div class="item">Something else here</div>
      <div class="divider"></div>
      <div class="item">Separated Link</div>
      <div class="divider"></div>
      <div class="item">One more separated link</div>
    </div>
  </div>
  <div class="right menu">
    <div class="item">
      <div class="ui transparent inverted icon input">
        <i class="search icon"></i>
        <input type="text" placeholder="Search">
      </div>
    </div>
    <a class="item">Link</a>
  </div>
</div>


  <!-- content will go here -->


  <script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
  <script src="semantic.js" type="text/javascript"></script>

  <script type="text/javascript">

  </script>      
</body>
</html>

要使下拉菜单正常工作,请确保安装节点 4.x 并从 gulp 构建。