<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.top{
background: blue;
height: 30px;
}
.left{
width:30px;
height: 30px;
background: pink;
float: left;
}
.right{
width:30px;
height: 30px;
background: yellow;
display: inline-block;
}
</style>
</head>
<body>
<div></div>
<div></div>
<div></div>
</body>
</html>
旺仔小馒头21