1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
<!DOCTYPE HTML>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie-edge">
<title>布局练习</title>
<style>
    .csl1{
        float: left;
        background-color: #111;
        width: 100px;
        height: 100px;
    }
    .csl2{
        float: left;
        background-color: #ccc;
        width: 100px;
        height: 100px;
    }
    .content:after{
        /*zoom:1*/
        content:"";
        display:block;
        clear:both;

        /*
        height:0;
        visibility:hidden;*/

        /*overflow：hidden*/
    }
    .clear{
       /*clear: both;*/
    }
</style>
</head>
<body>
<div class="content">
    <div class="csl1"></div>
    <div class="csl2"></div>
</div>
<div class="clear"></div>
<div class="csl1"></div>
</body>
</html>