clear 表示清除浮動
清除浮動防止對自身的影響
clear both表示清除對自己影響大的浮動
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>清除浮動</title>
<style type="text/css">
.box1{
width: 100px;
height: 100px;
background-color: yellow;
float: left;
}
.box2{
width: 200px;
height: 200px;
background-color: yellowgreen;
/*clear: left;*/
float: right;
}
.box3{
width: 300px;
height: 300px;
background-color: skyblue;
clear: right;
}
</style>
</head>
<body>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</body>
</html>
