lovecoding
/
Web1020


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      #part1 {
        float: left;
        width: 200px;
        height: 200px;
        margin-top: 10px;
        background: red;
      }
      #part2 {
        float: left;
        width: 200px;
        height: 200px;
        margin-top: 10px;
        background: yellow;
      }
      #part3 {
        float: left;
        width: 200px;
        height: 200px;
        margin-top: 10px;
        background: blue;
      }
      #part4 {
        float: left;
        width: 200px;
        height: 200px;
        margin-top: 10px;
        background: pink;
      }
      #part5 {
        float: left;
        width: 200px;
        height: 200px;
        margin-top: 10px;
        background: purple;
      }
      /* .box {
        overflow: auto;
      } */
       /* .aa {
        clear: left;
       } */
        #clearfix::after {
            content: "";
            display: block;
            clear: both;
        }
    </style>
  </head>
  <body>
    <!-- 
        1.溢出隐藏法：
            在浮动的父级盒子上添加overflow：hidden|auto属性
        2.额外标签法：
            在浮动同级添加空盒子  给该盒子添加样式：clear:both |left |right |none
        3.伪元素清浮动
         #clearfix::after {
            content: "";
            display: block;
            clear: both;
        }
        将其添加到高度塌陷的父级盒子上
    -->
    <div class="box" id="clearfix">
      <div id="part1"></div>
      <div id="part2"></div>
      <div id="part3"></div>
      <div id="part4"></div>
      <div id="part5"></div>
      <!-- <div class="aa"></div> -->
    </div>
  </body>
</html>