W3.CSS具有几个特殊的类，可以在网站上快速显示导航栏或菜单。
| 序号 | 类名和描述 |
|---|---|
| 1个 | w3-topnav 将列表样式设置为水平菜单/导航栏。 |
| 2 | w3-sidenav 将列表样式设置为垂直菜单/导航栏。 |
例
w3css_navigation.htm
<html>
<head>
<title>The W3.CSS Navigation</title>
<meta name = "viewport" content = "width=device-width, initial-scale = 1">
<link rel = "stylesheet" href = "https://www.w3schools.com/lib/w3.css">
<link rel = "stylesheet" href = "http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.4.0/css/font-awesome.min.css">
<link rel = "stylesheet" href = "https://fonts.googleapis.com/icon?family=Material+Icons">
</head>
<body class = "w3-container">
<h2>Navigation Demo</h2>
<hr/>
<h3>Horizontal top navigation bar</h3>
<nav class = "w3-topnav w3-red">
<a href="#">Home</a>
<a href="#">Overview</a>
<a href="#">Environment</a>
<a href="#">Containers</a>
<a href="#">Grids</a>
</nav>
<h3>Using font awesome icons</h3>
<nav class = "w3-topnav w3-red">
<a href="#"><i class="fa fa-home"></i></a>
<a href="#">Overview</a>
<a href="#">Environment</a>
<a href="#">Containers</a>
<a href="#">Grids</a>
</nav>
<h3>Using material icons</h3>
<nav class = "w3-topnav w3-red">
<a href="#"><i class="material-icons">home</i></a>
<a href="#">Overview</a>
<a href="#">Environment</a>
<a href="#">Containers</a>
<a href="#">Grids</a>
</nav>
<h3>Using Side Navigation</h3>
<nav class = "w3-sidenav w3-red w3-card-2" style="width:25%">
<a href="#">Home</a>
<a href="#">Overview</a>
<a href="#">Environment</a>
<a href="#">Containers</a>
<a href="#">Grids</a>
</nav>
</body>
</html>运行看下效果。
作者：terry，如若转载，请注明出处：https://www.web176.com/w3css/910.html
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