flex弹性：结合媒体查询布局代码

2020-6-6

不但使用了弹性布局，而且利用了媒体查询功能。

代码实例如下:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>蚂蚁部落</title>
<style>
.box div {
  width: 150px;
  padding: 20px;
}
.box1 {
  height: 120px;
  background-color: red;
}
.box2 {
  height: 100px;
  background-color: blue;
}
.box3 {
  height: 40px;
  background-color: pink;
}
.box4 {
  height: 200px;
  background-color: yellow;
}
@media (min-width: 640px) {
  .box {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
@media (max-width: 640px) {
  .box {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .box4 {
    order: -1;
  }
}
</style>
</head>
<body>
  <div class="box">
    <div class="box1"></div>
    <div class="box2"></div>
    <div class="box3"></div>
    <div class="box4"></div>
  </div>
</body>
</html>

THE END