Day.02.03 div之清除浮动

<!DOCTYPE html>
<html>
 <head>
 <meta  charset="utf-8">
  <title> 清除浮动 </title>
    <style type="text/css">
        .div1{
            width:60px;
            height:100px;
            border:1px solid black;
            background-color:pink;
            float:right;
        }
        .div2{
            width:500px;
            height:400px;
            border:1px solid red;
        }
        .div3{
            background-color:green;
            width:60px;
            height:100px;
        }
        /*清除浮动*/
        .clear{
            clear:both;
        }
    </style>
 </head>
 <body>
    <div class="div2">
        <div class="div1">div1</div>
        <div class="div1">div2</div>
        <div class="div1">div3</div>
        <div class="clear"><div><!--清除浮动-->
        <div class="div3">div3</div>
    </div>
 </body>
</html>

清楚浮动.png

小结:
清除浮动后不受浮动约束,用来和浮动组合,搭建界面!