<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
.wrapper{
display: grid;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="box a">a</div>
<div class="box b">b</div>
<div class="box c">c</div>
<div class="box d">d</div>
<div class="box e">e</div>
<div class="box f">f</div>
</div>
</body>
</html>
浏览器查看: