| <!DOCTYPE html> |
| <!-- |
| | Demo to help test animated webp with transparent backgrounds. Sets up |
| | two different animated webp images where one renders its frames using |
| | no blending when applying the new image over the existing one, and the |
| | other disposes to the background (which is alpha) as it runs through its |
| | frames. |
| --> |
| <html> |
| |
| <head> |
| <style> |
| body { |
| background-color: white; |
| } |
| |
| .layer { |
| position: absolute; |
| left: 0px; |
| top: 0px; |
| } |
| |
| @keyframes background-anim { |
| from { |
| background-color: green; |
| } |
| |
| to { |
| background-color: blue; |
| } |
| } |
| |
| .background { |
| position: absolute; |
| left: 0px; |
| top: 0px; |
| width: 100%; |
| height: 100%; |
| background-color: green; |
| animation: background-anim 5s alternate-reverse infinite ease-in-out; |
| } |
| |
| .image { |
| width: 300px; |
| height: 300px; |
| background-size: contain; |
| } |
| </style> |
| </head> |
| |
| <body> |
| <div class="background"></div> |
| |
| <div class="layer"> |
| <!-- Image that clears each frame by overwriting the entire frame with a |
| new image that has blending disabled --> |
| <div class="image" style="background-image: url(bottleflip_loader.webp)"> |
| </div> |
| <!-- Image that disposes the previous frame's rectangle to the background |
| color (which contains alpha) after it finishes, requiring that the |
| background color fill be done with no blending. --> |
| <div class="image" style="background-image: url(webp-animated-semitransparent4.webp);"> |
| </div> |
| <!-- Background color of image should be ignored, use canvas color instead--> |
| <div class="image" style="background-image: url(loading-spinner-opaque.webp)"> |
| </div> |
| </div> |
| </body> |
| |
| </html> |
