<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Flexbox Test: gap - intrinsic vertical</title> <link rel="author" title="Adam Argyle" href="mailto:argyle@google.com"> <style> section { background-color: green; display: inline-flex; flex-direction: column; } section > div{ background-color: grey; color: white; } section > div:not(:last-of-type) { margin-block-end: 20px; } </style> <body> <p>Test passes if there are <strong> green lines between boxes</strong>.</p> <section> <div>Black Panther</div> <div>Wonder Woman</div> <div>Storm</div> <div>Flash</div> </section> </body>