<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="css/reset.css">
<style type="text/css">
html,body{
100%;
height:100%;
position: relative;
background-color: #7a43b6;
}
.container {
85%;
height: 85%;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: #00b3ee;
}
.content{
85%;
height:85%;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: #4cae4c;
}
</style>
</head>
<body>
<div class="container">
<div class="content"></div>
</div>
</body>
</html>
复制直接运行即可