标签：菜单 color menu li width 1px html border css
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
ul {
list-style: none;
}
a {
text-decoration: none;
display: inline-block;
width: 100%;
}
.menu {
width: 800px;
margin: 0 auto;
height: 40px;
line-height: 40px;
background-color: lightblue;
}
.menu > li {
float: left;
width: 120px;
text-align: center;
position: relative;
}
.menu li:hover>a{
background-color: lightgreen;
color: white;
}
.menu > li + li {
border-left: 1px solid black;
}
.menu>li:hover>.menu_sub{
display: block;
}
.menu .menu_sub {
position: absolute;
left: -1px;
width: 100%;
border: 1px solid black;
display: none;
}
.menu .menu_sub > li + li {
border-top: 1px solid black;
}
</style>
</head>
<body>
<ul class="menu">
<li><a href="">首页</a></li>
<li>
<a href="">文档</a>
<ul class="menu_sub">
<li><a href="">文档1.0</a></li>
<li><a href="">文档2.0</a></li>
</ul>
</li>
<li>
<a href="">下载</a>
<ul class="menu_sub">
<li><a href="">下载1.0</a></li>
<li><a href="">下载2.0</a></li>
</ul>
</li>
<li><a href="">关于我们</a></li>
</ul>
</body>
</html>
标签：菜单,
color,
menu,
li,
width,
1px,
html,
border,
css
From： https://blog.csdn.net/zhangzhaoyuxunlei/article/details/141634164