float

2021-01-20 11:25:18 +08:00
parent 9853dbdd91
commit b8df71627e
21 changed files with 917 additions and 1 deletions
--- a/csspress/demo/clearfloat.html
+++ b/csspress/demo/clearfloat.html
@@ -0,0 +1,93 @@
+<!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>
+        * {
+            margin: 0;
+            padding: 0;
+        }
+
+        .box {
+            width: 1000px;
+            height: 300px;
+            background: gold;
+            margin: 20px;
+        }
+
+        .box1 {
+            /* width:60px;
+            height: 60px; */
+            background: red;
+            /* background: rgba(255, 0, 0, 0.363); */
+            /* float: left; */
+
+
+        }
+
+        .box2 {
+            width: 120px;
+            height: 80px;
+            background: gray;
+            border: 1px solid pink;
+            color: white;
+            /* float:right */
+            float: left;
+        }
+
+        .box4 {
+            width: 120px;
+            height: 80px;
+            background: blue;
+            border: 1px solid pink;
+            /* clear: left; 
+            这是哪个元素需要清除浮动哪个元素加clear
+            */
+        }
+
+        .boxes{
+            overflow: auto;
+            /* 
+            这是通过Overflow:auto 清除浮动
+             */
+        }
+        .blank{
+            clear:left
+        }
+        /* 
+            在浮动元素最后面加一个空的div 附上clear属性清除浮动
+         */
+
+        /* .boxes:after {
+            content: '.';
+            height: 0;
+            display: block;
+            clear: both;
+        } 
+        
+        这是通过伪类清除浮动，必须加上content:"." 否则不起作用
+        */
+    </style>
+</head>
+
+<body>
+    <div class="box">
+        <div class="boxes clearfix">
+            <div class="box1">asaaaa</div>
+            <div class="box2"></div>
+
+            <div class="box2">4</div>
+            <div class="box2 blankdiv">5</div>
+            <!-- <div class="box2" style="height: 180px;">6</div> -->
+            <div class="blank"></div>
+        </div>
+        <div class="box4"></div>
+
+    </div>
+
+</body>
+
+</html>