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用 CSS 和 HTML 完成一个简易的导航（nav）

2016-08-03 11:11  yojiaku  阅读(533)  评论(0)  编辑  收藏  举报

In this exercise you will create a navigation bar.

 

<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset=utf-8>
<title>HTML CSS exercise - create a simple navigaiton bar</title>
<style type="text/css">
nav {
    display: block;
    position: absolute;
    top: 0;
    width: 100%;
    background-color: green;
}
li{
    list-style-type: none;
    display: inline;
    margin-right: 20px;
    font-size:25px
}
a:link {
    color: #fff;
    text-decoration: none;
}
a:hover {
    color: orange;
    text-decoration: none;
}
li > ul {
    display: none
}
li:hover ul {
    display: block;
     position: absolute; 
    left:200px;
    background-color:green;
margin:0;
}
li:hover ul li a:link{
    display: block;
    margin-left:-30px;
}
</style>
</head>
<body>
<nav>
 <ul>
    <li> <a href="#"> Home </a> </li>
    <li> <a href="#"> About </a> </li>
    <li>
        <a href="#"> Products </a>
        <ul>
            <li> <a href="#"> Engineering </a> </li>
            <li> <a href="#"> Telecom </a> </li>
            <li> <a href="#"> Energy </a> </li>
            <li> <a href="#"> Finance </a> </li>
            <li> <a href="#"> Consultancy </a> </li>
        </ul>
    </li>
    <li> <a href="#"> Services </a> </li>
    <li> <a href="#"> Contact </a> </li>
 </ul>
</nav>
</body>
</html>

效果图：