实现效果

实现代码

html

<div id="container"> <nav> <ul> <li><a href="#">Home</a></li> <li><a href="#">WordPress</a> <!-- First Tier Drop Down --> <ul> <li><a href="#">Themes</a></li> <li><a href="#">Plugins</a></li> <li><a href="#">Tutorials</a></li> </ul> </li> <li><a href="#">Web Design</a> <!-- First Tier Drop Down --> <ul> <li><a href="#">Resources</a></li> <li><a href="#">Links</a></li> <li><a href="#">Tutorials</a> <!-- Second Tier Drop Down --> <ul> <li><a href="#">HTML/CSS</a></li> <li><a href="#">jQuery</a></li> <li><a href="#">Other</a> <!-- Third Tier Drop Down --> <ul> <li><a href="#">Stuff</a></li> <li><a href="#">Things</a></li> <li><a href="#">Other Stuff</a></li> </ul> </li> </ul> </li> </ul> </li> <li><a href="#">Graphic Design</a></li> <li><a href="#">Inspiration</a></li> <li><a href="#">Contact</a></li> <li><a href="#">About</a></li> </ul> </nav> <h1>Pure CSS Drop Down Menu</h1><p> A simple dropdown navigation menu made with CSS Only. Dropdowns are marked with a plus sign ( + )</p></div>

css

@import url(https://fonts.googleapis.com/css?family=Open+Sans);@import url(https://fonts.googleapis.com/css?family=Bree+Serif);body { background: #212121; font-size:22px; line-height: 32px; color: #ffffff; word-wrap:break-word !important; font-family: 'Open Sans', sans-serif; }h1 { font-size: 60px; text-align: center; color: #FFF;} h3 { font-size: 30px; text-align: center; color: #FFF;}h3 a { color: #FFF;}a { color: #FFF;}h1 { margin-top: 100px; text-align:center; font-size:60px; font-family: 'Bree Serif', 'serif'; }#container { margin: 0 auto;}p { text-align: center;}nav { margin: 50px 0; background-color: #E64A19;}nav ul { padding: 0; margin: 0; list-style: none; position: relative; } nav ul li { display:inline-block; background-color: #E64A19; }nav a { display:block; padding:0 10px; color:#FFF; font-size:20px; line-height: 60px; text-decoration:none;}nav a:hover { background-color: #000000; }nav ul ul { display: none; position: absolute; top: 60px; } nav ul li:hover > ul { display:inherit;} nav ul ul li { width:170px; float:none; display:list-item; position: relative;}nav ul ul ul li { position: relative; top:-60px; left:170px;} li > a:after { content: ' +'; }li > a:only-child:after { content: ''; }

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