Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-transitions/pseudo-elements-002.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Transitions Test: Transition pseudo element with ancestor display change</title>
<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#inner::before {
content: "This text should transition from red to green.";
height: 100px;
transition: height steps(2, start) 1s;
}
.flex #inner::before {
height: 300px;
}
.flex { display: flex }
</style>
<div id="outer">
<div id="inner"></div>
</div>
<script>
test(() => {
assert_equals(getComputedStyle(inner, "::before").height, "100px");
outer.className = "flex";
assert_equals(getComputedStyle(inner, "::before").height, "200px");
}, "Check that transitions run on a pseudo element whose ancestor changes display type.");
</script>