BFC就是一写正常流，浮动流布局的一写规则，比如（BFC会自动计算元素内部的高度适应到父级,PS{ 可以用来清浮动} ）：
<!doctype html>
<head>
<meta charset="utf-8" />
<title>Clear float</title>
<style>
.container{
margin: 30px auto;
width:600px;
height: 300px;
}
.wrapper{
border:solid 3px #a33;
}
.main{
width: 100px;
height: 100px;
background-color: #060;
margin: 10px;
float: left;
}
</style>
</head>
<body>
<div class="container">
<div class="wrapper">
<div class="main"></div>
<div class="main"></div>
<div class="main"></div>
</div>
</div>
<div class="container">
<div class="wrapper" style="float:left;">
<div class="main">1</div>
<div class="main">2</div>
<div class="main">3</div>
</div>
</div>
</body>
</html>
2:BFC的另一个规则，（BFC不会与浮动的元素发生叠加）：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<body>
<style>
body {
position: relative;
}
.aside {
width: 100px;
height: 150px;
float: left;
background: #f66;
}
.main {
height: 200px;
background: #fcc;
}
.hd{
overflow:hidden;
}
</style>
<div class="aside"></div>
<div class="main"></div>
<br>
<div class="aside"></div>
<div class="main hd"></div>
</body>
</html>
link_from
http://www.cnblogs.com/coco1s/p/3974077.html
and
http://www.cnblogs.com/lhb25/p/inside-block-formatting-ontext.html
时间： 2024-11-09 05:02:16