| <!DOCTYPE html> |
| <title>CSS Backdrop Filters Animation: Contrast Reference</title> |
| <link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org"> |
| <style> |
| .square { |
| position: absolute; |
| width: 100px; |
| height: 100px; |
| top: 100px; |
| left: 100px; |
| background: black; |
| } |
| .filt { |
| position: absolute; |
| width: 200px; |
| height: 200px; |
| top: 50px; |
| left: 50px; |
| backdrop-filter: contrast(50%); |
| } |
| .greenbox { |
| position: absolute; |
| width: 50px; |
| height: 50px; |
| top: 75px; |
| left: 75px; |
| background: green; |
| } |
| </style> |
| <p>You should see a gray rectangle with a green box. Neither black nor white.</p> |
| <div class="square"></div> |
| <div class="filt"> |
| <div class="greenbox"></div> |
| </div> |
