| <!DOCTYPE HTML> |
| <html class="reftest-wait"> |
| <title>A scroll timeline with a specified scroller for print</title> |
| <link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#scroll-timelines"> |
| <link rel="help" href="https://drafts.csswg.org/css-animations-2/#animation-timeline"> |
| <meta name="assert" content="CSS animation correctly updates values when using a specified scroller"> |
| <link rel="match" href="scroll-timeline-specified-scroller-ref.html"> |
| |
| <style> |
| @keyframes anim { |
| from { transform: translateX(0px); } |
| to { transform: translateX(100px); } |
| } |
| |
| #scroller { |
| scroll-timeline: timeline; |
| overflow: scroll; |
| width: 100px; |
| height: 100px; |
| scrollbar-width: none; |
| } |
| |
| #contents { |
| height: 200px; |
| } |
| |
| #box { |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| animation: anim 1s linear; |
| animation-timeline: timeline; |
| } |
| |
| @supports not (animation-timeline:timeline) { |
| #box { |
| animation-play-state: paused; |
| } |
| } |
| </style> |
| |
| <div id="scroller"> |
| <div id="contents"></div> |
| </div> |
| <div id="box"></div> |
| |
| <script> |
| window.addEventListener('load', function() { |
| const scroller = document.getElementById("scroller"); |
| // Move the scroller to the halfway point. |
| const maxScroll = scroller.scrollHeight - scroller.clientHeight; |
| scroller.scrollTop = 0.5 * maxScroll; |
| |
| window.requestAnimationFrame(() => { |
| document.documentElement.classList.remove("reftest-wait"); |
| }); |
| }); |
| </script> |
