| <script src="../../../resources/js-test-pre.js"></script> | |
| <script src="../resources/media-controls-loader.js" type="text/javascript"></script> | |
| <body> | |
| <script type="text/javascript"> | |
| description("Testing <code>ControlsBar</code> establishes a stacking context."); | |
| const controlsBar = new ControlsBar; | |
| document.body.appendChild(controlsBar.element); | |
| shouldBeEqualToString("getComputedStyle(controlsBar.element).willChange", "z-index"); | |
| </script> | |
| <script src="../../../resources/js-test-post.js"></script> | |
| </body> |