<!DOCTYPE html>
<title>CSS aspect-ratio: img inline size with box-sizing</title>
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht" />
<style>
img {
  border-top: 40px solid green;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<!--
  1st: A green rect 60x100.
       border-top is 60x40 and the content box is 60x60.
       We use 'aspect-ratio: auto && <ratio>', so the aspect-ratio works with
       content-box dimensions always. The block size of the content box is
       (100px - 40px) = 60px, so the inline size is 60px * 1/1 = 60px.
       (note: height here is the block size of border-box.)

  2nd: A green rect 20x100.
       border-top is 20x40 and the content box is 20x60.
       (note: height here is the block size of content-box.)

  3rd: A green rect 10x100.
       border-top is 10x40 and the content box is 10x60 because we compute
       the inline size by aspect-ratio which works with border-box and so the
       inline size is 100px / 10 = 10px.
       (note: height here is the block size of border-box.)

  4th: A green rect 10x100.
       border-top is 10x40 and the content box is 10x60 to add up to 10x100.
-->
<img src="support/1x1-green.png" style="height: 100px; aspect-ratio: auto 1/10; box-sizing: border-box;"
><img src="support/1x1-green.png" style="height: 60px; aspect-ratio: 1/3; box-sizing: content-box;"
><img src="support/1x1-green.png" style="height: 100px; aspect-ratio: 1/10; box-sizing: border-box;"
><img src="support/1x1-green.png" style="width: 10px; aspect-ratio: 1/6; box-sizing: content-box;">
