<!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>
*{
margin: 0;
padding: 0;
}
* {
box-sizing: border-box;
}
.cards {
width: 100%;
display: flex;
/* Put a card in the next row when previous cards take all width */
flex-wrap: wrap;
margin-left: -8px;
margin-right: -8px;
margin-bottom: -8px;
margin-top: 7px;
}
.cards__item {
/* There will be 4 cards per row */
flex-basis: 25%;
padding-left: 8px;
padding-right: 8px;
margin-bottom: 16px;
}
.cards__item div{
height: 80px;
background: #ccc;
}
.box{
align-items: center;
display: flex;
flex-direction: column;
height: 100%;
justify-content: center;
padding: 8px;
width: 839px;
margin: 0 auto;
background-color: antiquewhite;
}
</style>
</head>
<body>
<div class="box">
<div class="cards">
<!-- A card with given width -->
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<div class="cards__item">
<div></div>
</div>
<!-- Repeat other cards -->
</div>
</div>
</body>
</html>
![](https://img2020.cnblogs.com/blog/1380972/202109/1380972-20210913094237612-1797795366.png)