Blitz - WPT: box-sizing-squashed.html

wpt / css / css-sizing / aspect-ratio / box-sizing-squashed.html

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

Subtest	Status	Message
.item 1	FAIL	assert_equals: data-expected-height expected 40 got 45
.item 2	FAIL	assert_equals: data-expected-width expected 80 got 40
.item 3	PASS
.item 4	FAIL	assert_equals: data-expected-width expected 80 got 0 assert_equals: data-expected-height expected 40 got 20
.item 5	FAIL	assert_equals: data-expected-width expected 40 got 45
.item 6	FAIL	assert_equals: data-expected-height expected 80 got 40
.item 7	FAIL	assert_equals: data-expected-width expected 40 got 45
.item 8	FAIL	assert_equals: data-expected-width expected 40 got 20 assert_equals: data-expected-height expected 80 got 0
.item 9	PASS
.item 10	FAIL	assert_equals: data-expected-width expected 80 got 40
.item 11	PASS
.item 12	FAIL	assert_equals: data-expected-width expected 80 got 40
.item 13	PASS
.item 14	FAIL	assert_equals: data-expected-height expected 80 got 40
.item 15	PASS
.item 16	FAIL	assert_equals: data-expected-height expected 80 got 40

Enable JavaScript in test iframe

/css/css-sizing/aspect-ratio/box-sizing-squashed.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS aspect-ratio: correct ratio maintained when box-sizing: border-box and one axis is clamped to 0</title>
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
<meta name="assert" content='CSS aspect-ratio: correct ratio maintained when box-sizing: border-box and one axis is clamped to 0.'>
<style>
.item {
    box-sizing: border-box;
    border: 20px solid blue;
}

.horizontal {
    aspect-ratio: 2 / 1;
}

.vertical {
    aspect-ratio: 1 / 2;
}

.non-replaced {
    background: green;
    /* Break the items apart to make them individually distinguishable */
    margin-bottom: 10px;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<body onload="checkLayout('.item')">

<img class="item horizontal" style="width: 50px; height: auto" src="./support/20x50-green.png" width="20" height="50" data-expected-width="50" data-expected-height="40">

<img class="item horizontal"  style="width: auto; height: 20px" src="./support/20x50-green.png" width="20" height="50" data-expected-width="80" data-expected-height="40">

<img class="item horizontal" style="max-width: 50px; height: auto" src="./support/20x50-green.png" width="20" height="50" data-expected-width="40" data-expected-height="40">

<img class="item horizontal" style="width: auto; max-height: 20px" src="./support/20x50-green.png" width="20" height="50" data-expected-width="80" data-expected-height="40">

<img class="item vertical" style="height: 50px; width: auto" src="./support/20x50-green.png" width="20" height="50" data-expected-width="40" data-expected-height="50">

<img class="item vertical"  style="height: auto; width: 20px" src="./support/20x50-green.png" width="20" height="50" data-expected-width="40" data-expected-height="80">

<img class="item vertical" style="max-height: 50px; width: auto" src="./support/20x50-green.png" width="20" height="50" data-expected-width="40" data-expected-height="50">

<img class="item vertical" style="height: auto; max-width: 20px" src="./support/20x50-green.png" width="20" height="50" data-expected-width="40" data-expected-height="80">

<div class="non-replaced item horizontal" style="width: 50px; height: auto" width="20" height="50" data-expected-width="50" data-expected-height="40"></div>

<div class="non-replaced item horizontal"  style="width: auto; height: 20px" width="20" height="50" data-expected-width="80" data-expected-height="40"></div>

<div class="non-replaced item horizontal" style="max-width: 50px; height: auto" width="20" height="50" data-expected-width="50" data-expected-height="40"></div>

<div class="non-replaced item horizontal" style="width: auto; max-height: 20px" width="20" height="50" data-expected-width="80" data-expected-height="40"></div>

<div class="non-replaced item vertical" style="height: 50px; width: auto" width="20" height="50" data-expected-width="40" data-expected-height="50"></div>

<div class="non-replaced item vertical"  style="height: auto; width: 20px" width="20" height="50" data-expected-width="40" data-expected-height="80"></div>

<div class="non-replaced item vertical" style="max-height: 50px; width: auto" width="20" height="50" data-expected-width="40" data-expected-height="50"></div>

<div class="non-replaced item vertical" style="height: auto; max-width: 20px" width="20" height="50" data-expected-width="40" data-expected-height="80"></div>