html
<!DOCTYPE html>
<html>
<head>
<style>
.container {
width: 800px;
display: flex;
flex-wrap: wrap;
gap: 20px;
border: 1px solid #ddd;
margin: 20px;
}
.cell {
width: calc(50% - 10px); /* 每列占据一半宽度，减去间隙的宽度 */
background-color: #f1f1f1;
padding: 10px;
box-sizing: border-box;
}
body, html {
height: 100%;
margin: 0;
}
</style>
</head>
<body>
<div class="container">
<div class="cell">单元格1</div>
<div class="cell">单元格2</div>
<div class="cell">单元格3</div>
<div class="cell">单元格4</div>
<div class="cell">单元格5</div>
<div class="cell">单元格6</div>
</div>
</body>
</html>