lovecoding
/
VIP28


			
				
					
						
						
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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>
        .main {
            border: 2px solid #000;
            /* overflow: auto; */
        }
        .one {
            background: #f00;
            float: left;
            width: 200px;
            height: 200px;
            font-size: 30px;
            color: #fff;
        }
        .two {
            background: #0f0;
            float: left;
            width: 200px;
            height: 200px;
            font-size: 30px;
            color: #fff;
        }
        .three {
            background: #00f;
            float: left;
            width: 200px;
            height: 200px;
            font-size: 30px;
            color: #fff;
        }
        /* .empty {
            clear: both;
        } */
        .clearfix::after {
            content: "";
            display: block;
            clear: both;
        }
    </style>
</head>
<body>
    <!-- 
        1.溢出隐藏法：在高度塌陷的父级元素上 添加一个属性 overflow:hidden/auto;
        2.额外标签法: 在子集添加一个空标签 并添加属性clear:both/left/right; clear:none;
        3.伪元素清浮动：
        .clearfix::after {
            content: "";
            display: block;
            clear: both;
        }
        把样式名clearfix添加到对应高度塌陷的父元素上
     -->
    <div class="main clearfix">
        <div class="one">1</div>
        <div class="two">2</div>
        <div class="three">3</div>
        <!-- <div class="empty"></div> -->
        我是一段话
     </div>
</body>
</html>