To achieve such a layout
The initial implementation of the code is like this:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.box {
display: flex;
flex-wrap: wrap;
}
.item {
width: 50%;
}
</style>
</head>
<body>
<div class="box">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
</div>
<script lang="ts">
</script>
</body>
</html>
Add to item: border: 1px solid red; after
Because 1px border occupies space, width: 50% + 1px causes one row and two columns to fit, and they are squeezed down. At this time, you need to change the box model of each item, box-sizing: border-box;
Complete code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.box {
display: flex;
flex-wrap: wrap;
}
.item {
width: 50%;
border: 1px solid red;
box-sizing: border-box;
}
</style>
</head>
<body>
<div class="box">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
</div>
<script lang="ts">
</script>
</body>
</html>