果然，过了一会儿，在那个地方出现了太阳的小半边脸，红是红得很，却没有亮光。太阳像负着什么重担似的，慢慢儿，一纵一纵地，使劲儿向上升。
本文实例讲述了纯CSS实现鼠标滑过显示子菜单的二级菜单效果。分享给大家供大家参考。具体如下：
这是一款基于纯CSS实现的菜单，当鼠标划过的时候，子菜单会出现，没有过多修饰，简约不失美观，稍加修善就是一款好菜单。在兼容性方面，本菜单也做的不错。
运行效果截图如下：
在线演示地址如下：
http://demo.haodaima.com/js/2015/css-2level-mouse-over-show-menu-codes/
具体代码如下：
复制代码
代码如下:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS Flyout menus</title>
<style>
#nav, #nav ul {
padding: 0;
margin: 0;
list-style: none;
}
#nav li {
float: left;
position: relative;
width: 10em;
border: 1px solid #B0C4DE;
background-color: #E7EDF5;
color: #2D486C;
font: 80% Verdana, Geneva, Arial, Helvetica, sans-serif;
margin-right: 1em;
}
#nav a:link, #nav a:visited {
display: block;
text-decoration: none;
padding-left: 1em;
color: #2D486C;
}
#nav ul {
display: none;
position: absolute;
padding-top: 0.5em;
}
#nav ul li {
float: none;
border: 0 none transparent;
border-bottom: 1px solid #E7EDF5;
background-color: #F1F5F9;
font-size: 100%;
margin: 0;
margin-bottom: 0.5em;
padding: 0;
}
#nav li:hover ul {
display: block;
}
</style>
</head>
<body>
<ul id="nav">
<li><a rel="nofollow noopener noreferrer" href="#">Starters</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Fish</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Fruit</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Soups</a></li>
</ul>
</li>
<li><a rel="nofollow noopener noreferrer" href="#">Main courses</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Meat</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Fish</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Vegetarian</a></li>
</ul>
</li>
<li><a rel="nofollow noopener noreferrer" href="#">Desserts</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Fruit</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Puddings</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Ice Creams</a></li>
</ul>
</li>
</ul>
</body>
</html>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS Flyout menus</title>
<style>
#nav, #nav ul {
padding: 0;
margin: 0;
list-style: none;
}
#nav li {
float: left;
position: relative;
width: 10em;
border: 1px solid #B0C4DE;
background-color: #E7EDF5;
color: #2D486C;
font: 80% Verdana, Geneva, Arial, Helvetica, sans-serif;
margin-right: 1em;
}
#nav a:link, #nav a:visited {
display: block;
text-decoration: none;
padding-left: 1em;
color: #2D486C;
}
#nav ul {
display: none;
position: absolute;
padding-top: 0.5em;
}
#nav ul li {
float: none;
border: 0 none transparent;
border-bottom: 1px solid #E7EDF5;
background-color: #F1F5F9;
font-size: 100%;
margin: 0;
margin-bottom: 0.5em;
padding: 0;
}
#nav li:hover ul {
display: block;
}
</style>
</head>
<body>
<ul id="nav">
<li><a rel="nofollow noopener noreferrer" href="#">Starters</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Fish</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Fruit</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Soups</a></li>
</ul>
</li>
<li><a rel="nofollow noopener noreferrer" href="#">Main courses</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Meat</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Fish</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Vegetarian</a></li>
</ul>
</li>
<li><a rel="nofollow noopener noreferrer" href="#">Desserts</a>
<ul>
<li><a rel="nofollow noopener noreferrer" href="#">Fruit</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Puddings</a></li>
<li><a rel="nofollow noopener noreferrer" href="#">Ice Creams</a></li>
</ul>
</li>
</ul>
</body>
</html>
希望本文所述对大家的css网页设计有所帮助。
本文纯CSS如何实现鼠标滑过显示子菜单的二级菜单效果到此结束。勤奋能够弥补聪明的不足，但聪明无法弥补懒惰的缺陷。小编再次感谢大家对我们的支持！
![]("./images/paella-dish.jpg)