<!DOCTYPE html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
<title>grid item with border-box and max-content should include borders</title>
<style>
.grid {
display: grid;
grid-auto-columns: 1fr;
grid-auto-flow: column;
border: 1px solid red;
width: max-content;
}
.item {
width: 50px;
background-color: blue;
padding: 10px 20px;
}
.content {
width: 50px;
height: 50px;
background-color: green;
}
</style>
<div class="grid">
<div class="item">
<div class="content"></div>
</div>
<div class="item">
<div class="content"></div>
</div>
</div>