|
@@ -0,0 +1,66 @@
|
|
|
+<!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>
|