鼠标移入时弹出蒙版！！！
html<!DOCTYPE html<html lang="en"<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="zimutanchu.css">
<title>Title</title>
</head>
<body>
<div class="mu1">
<div class="mu2">
<ul>
<li>
<a href="">
<img src="img/46.jpg" alt="">
<div class="zi">
<div class="tu1">
<img src="img/55.jpg" alt="">
</div>
<h5>hufef ef</h5>
</div>
</a>
</li>
</ul>
</div>
</div>
</body>
</html>
css:
*{
margin: 0;
padding: 0;
}
.mu1{
auto;
}
.mu2{
1200px;
height: 400px;
margin: auto;
}
ul{
1200px;
height: 230px;
border: 1px solid red;
}
ul li{
25%;
list-style: none;
float: left;
position: relative;
overflow: hidden;
}
.zi{
position: absolute;
left: 0;
bottom: -100px;
100%;
height: 100px;
background-color: transparent;
}
.tu1{
float: left;
}
h5{
float: left;
}
ul li:hover .zi{
background-color: black;
opacity: .5;
left: 0;
bottom: 0;
transition: all linear 1s;
}