<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>高度坍塌的解决方案</title></title>
<style>
.container {
background: lightblue;
padding: 30px;
}
.item {
height: 100px;
width: 100px;
background-color: red;
margin: 6px;
float: left;
}
.clearfix::after {
display: block;
content: "";
clear: both;
/* clear: left; */
/* clear: right; */
}
/* 还行的解决方案 */
/* .clearfix {
clear: both;
} */
</style>
</head>
<body>
<div class="container clearfix">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
<div class="item">5</div>
<div class="item">6</div>
<div class="item">7</div>
<div class="item">8</div>
<div class="item">9</div>
<div class="item">10</div>
<!-- <div class="clearfix"></div> -->
</div>
<!-- 高度坍塌的根源：常规六盒子的自动高度，在计算时，不会考虑浮动盒子 -->
<!-- 在一个块盒上设置 clear 属性可以清除浮动影响 -->
</body>
</html>