<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Containment Test: Layout containment on flexbox container</title> <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com"> <link rel="help" href="https://drafts.csswg.org/css-contain-1/#containment-layout"> <link rel="match" href="reference/contain-layout-flexbox-001-ref.html"> <meta name=assert content="Layout containment does apply to flexbox containers, thus their baseline is the same than if they don't have contents."> <style> div { display: inline-flex; border: 5px solid green; contain: layout; color: transparent; width: 0; height: 0; } </style> <p>This test passes if it has the same output as the reference. You see the word "before", a 10px green square at the bottom, and then the word "after".</p> before<div>f</div>after