<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
.container {
float: left;
border: 1px solid #000;
display: flex;
width: 290px;
flex-wrap: wrap;
justify-content: space-between;
resize: both;
}
.list {
width: 65px;
height: 65px;
margin-bottom: 10px;
background-color: rgb(148, 148, 131);
margin-right: 10px;
}
.list:nth-child(4n) {
margin-right: 0px;
}
.container::after {
content: '';
display: block;
/* // 会主动放大, 会主动缩小, 自适应宽度 */
flex: 1 1 auto;
}
</style>
</head>
<body>
<div class="container">
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
<div class="list"></div>
</div>
</body>
</html>
