Blitz - WPT: scrollable-containing-block-size.html

wpt / css / css-anchor-position / scrollable-containing-block-size.html

Data from commit:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)

Subtest	Status	Message
.target 1	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 2	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 3	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 4	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 5	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 6	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 7	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 8	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 9	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 10	FAIL	assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 11	FAIL	assert_equals: data-offset-y expected -100 got 0 assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 12	FAIL	assert_equals: data-offset-x expected -100 got 0 assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100
.target 13	FAIL	assert_equals: data-offset-x expected -100 got 0 assert_equals: data-expected-width expected 200 got 100 assert_equals: data-expected-height expected 200 got 100

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/css/css-anchor-position/scrollable-containing-block-size.html

<!DOCTYPE html>
<title>Tests where the "padding edge" should be for various display types.</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/">
<link rel="help" href="https://drafts.csswg.org/css-position-4/#scrollable-containing-block">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/12552">
<style>
.scroller {
  /* Use overflow hidden instead of scroll to mitigate scrollbar differences. */
  overflow: hidden;
  position: relative;
  width: 80px;
  height: 80px;
  margin: 10px;
  border: solid 3px;
  padding: 10px;
}

.filler {
  background: orange;
  min-width: 180px;
  min-height: 180px;
}

.translate {
  translate: 50px;
}

.relative {
  position: relative;
  left: 20px;
  top: 40px;
}

.anchor {
  anchor-name: --a;
}

.target {
  position-anchor: --a;
  position: absolute;
  inset: 0;
  place-self: stretch;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.target')">

<!-- Base case, block layout no shift. -->
<div class="scroller">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Block layout with relative shift. -->
<div class="scroller">
  <div class="filler relative"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Block layout with translate shift. -->
<div class="scroller">
  <div class="filler translate"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Flex layout with no shift. -->
<div class="scroller" style="display: flex;">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Flex layout with relative shift. -->
<div class="scroller" style="display: flex;">
  <div class="filler relative"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Flex layout with translate shift. -->
<div class="scroller" style="display: flex;">
  <div class="filler translate"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Grid layout with no shift. -->
<div class="scroller" style="display: grid;">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Grid layout with relative shift. -->
<div class="scroller" style="display: grid;">
  <div class="filler relative"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Grid layout with translate shift. -->
<div class="scroller" style="display: grid;">
  <div class="filler translate"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Grid layout with template. -->
<div class="scroller" style="display: grid; grid-template: 180px / 180px">
  <div class="anchor"></div>
  <div class="target" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Use flexbox to trigger up scrollable area. -->
<div class="scroller" style="display: flex; flex-direction: column-reverse;">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="0" data-offset-y="-100" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Use flexbox to trigger right scrollable area. -->
<div class="scroller" style="display: flex; flex-direction: row-reverse;">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="-100" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>

<!-- Use RTL to trigger right scrollable area. -->
<div class="scroller" style="direction: rtl;">
  <div class="filler"><div class="anchor"></div></div>
  <div class="target" data-offset-x="-100" data-offset-y="0" data-expected-width="200" data-expected-height="200"></div>
</div>