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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>风车</title>
<style>
.box1 {
width: 100px;
height: 100px;
background-color: lightblue;
position: relative;
left: 100px;
}
.box2 {
width: 100px;
height: 100px;
background-color: lightpink;
}
.box3 {
width: 100px;
height: 100px;
background-color: lightgreen;
position: relative;
left: 200px;
top:-100px;
}
.box4 {
width: 100px;
height: 100px;
background-color: lightyellow;
position: relative;
left: 100px;
top: -100px;
}
</style>
</head>
<body>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
<div class="box4"></div>
</body>
</html>点击 "运行实例" 按钮查看在线实例