<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>垂直居中,使用absolute和transform</title>
<style type="text/css">
.parent{
position: relative;
height: 100px;
background-color: #0000FF;
}
.son{
position: absolute;
top: 50%;
transform: translateY(-50%);
background-color: red;
}
</style>
</head>
<body>
<div class="parent">
<div class="son">
垂直居中,absoulte和transform
</div>
</div>
</body>
</html>
