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Status

This page documents the implementation status of various HTML and CSS features in Blitz.

CSS PropertiesHTML ElementsEventsWPT TestsWPT History

This page documents Blitz's scores on the "css" subsuite of the Web Platform Tests.

wpt / css / css-scroll-anchoring

Score history
1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%May 2025Jul 2025Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026css/css-scroll-anchoring

Data from commit:
ff623a8 Fix the position of collapsed table borders (#1005) (2026-10-01)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total7.59%(6/79)7.59%(7/99)7.07%
parsing33.33%(1/3)33.33%(2/6)33.33%
TestSubtestsSubtest %Status
abspos-containing-block-outside-scroller.html(0/1)0.00%FAIL
abspos-contributes-to-static-parent-bounds.html(0/1)0.00%FAIL
abspos-in-multicol-001.html(0/1)0.00%FAIL
abspos-in-multicol-002.html(0/1)0.00%FAIL
abspos-in-multicol-003.html(0/1)0.00%FAIL
adjustment-followed-by-scrollBy.html(0/1)0.00%SKIP
adjustments-in-scroll-event-handler.tentative.html(0/1)0.00%SKIP
after-scrollable-range-shrinkage-001.html(0/1)0.00%SKIP
after-scrollable-range-shrinkage-002.html(0/1)0.00%FAIL
after-scrollable-range-shrinkage-003.html(0/1)0.00%SKIP
after-scrollable-range-shrinkage-004.html(0/1)0.00%SKIP
ancestor-change-heuristic.html(0/2)0.00%FAIL
anchor-inside-iframe.html(0/1)0.00%FAIL
anchor-inside-textarea.tentative.html(0/1)0.00%SKIP
anchor-updates-after-explicit-scroll.html(0/1)0.00%FAIL
anchoring-with-bounds-clamping-div.html(0/1)0.00%FAIL
anchoring-with-bounds-clamping.html(0/1)0.00%FAIL
anonymous-block-box.html(0/1)0.00%FAIL
basic.html(0/1)0.00%FAIL
clamp-negative-overflow.html(0/1)0.00%FAIL
clipped-scrollers-skipped.html(0/1)0.00%FAIL
contain-paint-offscreen-container.html(0/1)0.00%FAIL
contenteditable-insert-line-at-top.tentative.html(0/1)0.00%SKIP
contenteditable-near-cursor.tentative.html(0/1)0.00%FAIL
descend-into-container-with-float.html(0/1)0.00%FAIL
descend-into-container-with-overflow.html(0/1)0.00%FAIL
device-pixel-adjustment.html(0/1)0.00%FAIL
dirty-contents-reselect-anchor.tentative.html(0/1)0.00%FAIL
editable-scroll-anchor.html(0/2)0.00%FAIL
exclude-fixed-position.html(0/1)0.00%FAIL
exclude-inline.html(1/1)100.00%PASS
exclude-sticky.html(0/1)0.00%FAIL
focus-prioritized.html(0/1)0.00%FAIL
focused-element-in-excluded-subtree.html(0/1)0.00%SKIP
focused-element-nested-anchor.html(0/1)0.00%SKIP
focused-element-outside-scroller.html(0/1)0.00%SKIP
fragment-scrolling-anchors.html(0/1)0.00%FAIL
fresh-table-col-crash.html(1/1)100.00%PASS
fullscreen-crash.html(1/1)100.00%PASS
heuristic-with-offset-update-from-scroll-event-listener.html(0/1)0.00%SKIP
heuristic-with-offset-update.html(0/1)0.00%FAIL
history-restore-anchors.html(0/1)0.00%FAIL
ignore-adjustments-while-scrolling-to-anchor.tentative.html(0/1)0.00%SKIP
image-001.html(0/1)0.00%FAIL
infinite-scroll-event.tentative.html(0/1)0.00%SKIP
inheritance.html(0/2)0.00%FAIL
inline-block-002.html(0/1)0.00%FAIL
inline-block.html(0/1)0.00%FAIL
multicol-fragmented-anchor.html(0/1)0.00%FAIL
negative-layout-overflow.html(0/1)0.00%FAIL
nested-overflow-subtree-layout-vertical.html(0/1)0.00%FAIL
nested-overflow-subtree-layout.html(0/1)0.00%FAIL
opt-out-dynamic-scroller.html(0/1)0.00%FAIL
opt-out-dynamic.html(0/1)0.00%FAIL
opt-out-inner-table.html(0/1)0.00%FAIL
opt-out-table.html(0/1)0.00%FAIL
opt-out.html(0/2)0.00%FAIL
position-change-heuristic-display-none-change.html(0/1)0.00%SKIP
position-change-heuristic-display-none-to-abspos-change.html(0/1)0.00%SKIP
position-change-heuristic-ib-split.html(0/1)0.00%SKIP
position-change-heuristic-in-nested-scroll-box.html(0/2)0.00%FAIL
position-change-heuristic.html(0/2)0.00%FAIL
reading-scroll-forces-anchoring.html(0/1)0.00%FAIL
scroll-anchoring-editing-content-change.html(0/3)0.00%FAIL
scroll-padding-affects-anchoring.html(0/1)0.00%FAIL
shadow-dom-subscroller.html(0/1)0.00%FAIL
start-edge-in-block-layout-direction.html(0/10)0.00%FAIL
subtree-exclusion.html(0/1)0.00%FAIL
table-col-and-dead-row-group-crash.html(1/1)100.00%PASS
table-collapsed-borders-crash.html(1/1)100.00%PASS
text-anchor-in-vertical-rl.html(0/1)0.00%FAIL
vertical-rl-viewport-size-change-000.html(0/1)0.00%FAIL
vertical-rl-viewport-size-change-001.html(0/1)0.00%FAIL
wrapped-text.html(0/1)0.00%FAIL
zero-scroll-offset-001.html(0/1)0.00%FAIL
zero-scroll-offset-002.html(0/1)0.00%FAIL