任务十的源代码，其实有github的，但就是不知道怎么弄，近期会学会的。在IE和firefox上检测运行良好。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>six</title>
<link rel="stylesheet" href="./six.css">
<style>
body{
margin: 0;
padding: 0;
}
ul {
margin: 0;
padding: 0;
}
li{
list-style: none;
}
.flex-container {
display: flex;
align-items:center;
flex-flow: row wrap;
justify-content: space-between;
padding: 20px;
}
.flex-item {
width: 150px;
height: 120px;
border: solid 1px #f00;
margin: 20px 0px;
}
.flex-item1 {
width: 150px;
height: 100px;
border: solid 1px #f00;
margin: 20px 0px;
}
.flex-item2 {
width: 150px;
height: 40px;
border: solid 1px #f00;
margin: 20px 0px;
}
.flex-item3 {
width: 150px;
height: 200px;
border: solid 1px #0f0;
margin: 20px 0px;
}
@media all and (max-width: 640px) {
.flex-item3{order:0;}
.flex-item2{order:3;}
.flex-item1{order:2;}
.flex-item{order:1;}
.flex-container {
display: flex;
align-items:flex-start;
flex-flow: row wrap;
justify-content: space-between;
padding: 20px;
}
}
</style>
</head>
<body>
<ul class="flex-container">
<li class="flex-item"> </li>
<li class="flex-item1">2</li>
<li class="flex-item2">3</li>
<li class="flex-item3">4</li>
</ul>
</body>
</html>
时间： 2024-12-15 14:23:34