![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Correction status：Uncorrected
Teacher's comments：
Collection
Collection
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>4.浮动元素也支持相对定位</title>
<style type="text/css">
.box1 {
width: 200px;
height: 200px;
background-color: red;
float: left;
}
.box2 {
width: 200px;
height: 200px;
background-color: coral;
float: left;
position: relative;
top:100px;
left: -100px;
}
.box3 {
width: 200px;
height: 200px;
background-color: brown;
float: left;
position: relative;
left: -200px;
top: 200px;
}
</style>
</head>
<body>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</body>
</html>点击 "运行实例" 按钮查看在线实例
