diff options
Diffstat (limited to 'testing/web-platform/tests/css/css-position/containing-block-change-button.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-position/containing-block-change-button.html | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-position/containing-block-change-button.html b/testing/web-platform/tests/css/css-position/containing-block-change-button.html new file mode 100644 index 0000000000..a4d20685ce --- /dev/null +++ b/testing/web-platform/tests/css/css-position/containing-block-change-button.html @@ -0,0 +1,35 @@ +<!doctype html> +<meta charset="utf-8"> +<title>Tests that after making a button a containing block, dynamically-inserted abspos boxes still get positioned correctly</title> +<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1740439"> +<link rel="help" href="https://drafts.csswg.org/css-position/#abspos-insets"> +<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> +<link rel="author" href="https://mozilla.org" title="Mozilla"> +<link rel="match" href="containing-block-change-button-ref.html"> +<style> + #button { + width: 400px; + height: 400px; + margin: 100px; + background-color: purple; + border: 0; + padding: 10px; + } + #button > div { + position: absolute; + width: 100px; + height: 100px; + background-color: green; + /* Vertically centered to match in-flow button layout of the reference */ + top: 150px; + left: 0; + } +</style> +<button id="button"></button> +<script> + let button = document.getElementById("button"); + button.getBoundingClientRect(); + button.style.position = "relative"; + button.getBoundingClientRect(); + button.appendChild(document.createElement("div")); +</script> |