| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS will-change: 'will-change: transform-style' 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/css3-transforms/#transform-style-property"> |
| <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: transform-style; 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> |
