<!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>
<link rel="help" href="https://drafts.csswg.org/css-sizing-3">
<link rel="match" href="child-border-box-and-max-content-001-ref.html">
<style>
    .grid {
        display: grid;
        grid-auto-columns: 1fr;
        grid-auto-flow: column;
        border: 1px solid red;
        width: max-content;
    }
  