大体流动性 模型
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>无标题文档</title>
<style>
@media (min-width: 800px) {
.container {
width: 800px;
margin-left: auto;
margin-right: auto;
}
}
.container {
display: -webkit-flex;
display: flex;
-webkit-flex-flow: row wrap;
flex-flow: row wrap;
}
.container div{ box-sizing:border-box; min-height:150px; min-width:150px; }
.container .c1{ background-color:#03F; width:100%;}
.container .c2{ background-color:#06C; width:100%;}
.container .c3{ background-color:#0CF; width:100%;}
@media (min-width: 600px) {
.container .c2,.container .c3 {
width:50%;
}
}
</style>
</head>
<body>
<div class="container">
<div class="c1"></div>
<div class="c2"></div>
<div class="c3"></div>
</div>
</body>
</html>
