<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>水平垂直居中:flex+justifycontent+algin-items</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
html,body{
height: 100%;
width:100%;
}
.parent{
display: flex;
height: 100%;
width: 100%;
justify-content: center;
align-items: center;
background-color: aqua;
}
.son{
background-color: red;
}
</style>
</head>
<body>
<div class="parent">
<div class="son">
使用弹性盒模型
</div>
</div>
</body>
</html>
