trycss3_flexbox_flex_number 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style> 
.flex-container {
    display: -webkit-flex;
    display: flex;
    width: 400px;
    height: 250px;
    background-color: lightgrey;
}
.flex-item {
    background-color: cornflowerblue;
    margin: 10px;
}
.item1 {
    -webkit-flex: 2;
    flex: 2;
}
.item2 {
    -webkit-flex: 1;
    flex: 1;
}
.item3 {
    -webkit-flex: 1;
    flex: 1;
}
</style>
</head>
<body>
 
 
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运行结果
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