<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Containment Test: Paint containment stacking context</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-paint"> <link rel="match" href="../reference/pass_if_pass_below.html"> <meta name=assert content="Paint containment elements create a stacking context."> <style> div { contain: paint; background: white; } span { position: relative; z-index: -1; } </style> <p>Test passes if there is the word "PASS" below.</p> <div><span>PASS</span></div>