<!doctype html> <head> <title>CSS Test (Conditional Rules): Invalid rules after @supports</title> <!-- This test is paired with at-media-003.html ; please keep them in sync --> <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact"> <link rel="help" href="https://www.w3.org/TR/css-conditional-3/#contents-of"> <link rel="match" href="at-supports-001-ref.html"> <meta name="assert" content="Test passes if rules required to occur before all style rules are invalid after @supports."> <style> @namespace x "http://www.w3.org/"; @supports (background: blue) { /* invalidates later rules even if empty */ } @import "support/fail.css"; @namespace y "http://www.w3.org/"; .test1, x|div { background: green; } .test1, y|div { background: red; } div { background: red; height: 50px; width: 100px; } </style> <style> @supports (background: blue) { /* @supports isn't invalidated, only misordered stuff after it is */ .test2 { background: green; } } @import "support/fail.css"; </style> </head> <body> <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p> <div class="test1"></div> <div class="test2"></div> </body> </html>