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Diffstat (limited to 'testing/web-platform/tests/css/css-will-change/will-change-stacking-context-isolation-1.html')
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diff --git a/testing/web-platform/tests/css/css-will-change/will-change-stacking-context-isolation-1.html b/testing/web-platform/tests/css/css-will-change/will-change-stacking-context-isolation-1.html new file mode 100644 index 0000000000..9eaf812e93 --- /dev/null +++ b/testing/web-platform/tests/css/css-will-change/will-change-stacking-context-isolation-1.html @@ -0,0 +1,21 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<title>CSS will-change: 'will-change: isolation' creates a stacking context</title> +<link rel="author" title="L. David Baron" href="https://dbaron.org/"> +<link rel="author" title="Mozilla" href="http://www.mozilla.org/"> +<link rel="help" href="https://drafts.csswg.org/css-will-change-1/#will-change"> +<link rel="help" href="http://www.w3.org/TR/compositing-1/#isolation"> +<link rel="match" href="green-square-100-by-100-ref.html"> +<meta name="assert" content="If any non-initial value of a property would create a stacking context on the element, specifying that property in will-change must create a stacking context on the element."> +<style> +html, body { margin: 0; padding: 0; } +div { width: 100px; height: 100px } +#wc { will-change: isolation; background: red } +#child { position: absolute; top: 0; left: 0; z-index: -1; background: green } +</style> +<body> + <div id="wc"> + <div id="child"> + </div> + </div> +</body> |