gecko-dev/layout/reftests/css-transitions/stacking-context-transform-...

43 строки
1.1 KiB
HTML

<!DOCTYPE html>
<html class="reftest-wait">
<title>
Transform transition winning over !important rule creates a stacking context
</title>
<style>
span {
height: 100px;
width: 100px;
position: fixed;
background: green;
top: 50px;
}
#test {
width: 100px; height: 100px;
background: blue;
/*
* On the compositor we use a previous vsync time stamp rather than the
* current time stamp, as a result sometimes transition may be still in
* before phase after waiting a frame. To compose the same transform value
* regardless of whether the transition is in before or active phase, we use
* steps(1, end) here.
*/
transition: transform 100s steps(1, end);
transform: none ! important;
}
</style>
<span></span>
<div id="test"></div>
<script>
window.addEventListener("load", () => {
var target = document.getElementById("test");
getComputedStyle(target).transform;
target.style.setProperty("transform", "translateX(200px)", "important");
getComputedStyle(target).transform;
requestAnimationFrame(() => {
document.documentElement.classList.remove("reftest-wait");
});
});
</script>