五、css之div淡入淡出效果
fade-out
fade-in
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>div透明度变化</title>
<style type="text/css">
*{margin: 0px;padding: 0px;}
.hover-con{margin: 100px auto;padding:0px 20px;width:90%; text-align: center;border: 1px solid #000000;}
.ech-fade-out,.ech-fade-in{
transition: all .4s;
display: inline-block;
margin: 20px;
width: 80px;
height: 80px;
line-height: 80px;
text-align: center;
background:#0069D9;
color: #FFFFFF;
cursor: pointer;
}
.ech-fade-out:hover {
opacity: .6;
}
.ech-fade-in {
opacity: .5;
}
.ech-fade-in:hover {
opacity: 1;
}
</style>
</head>
<body>
<div class="hover-con">
<span class="ech-fade-out">fade-out</span>
<span class="ech-fade-in">fade-in</span>
</div>
</body>
</html>