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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-backgrounds / parsing

Score history
1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%Sep 2026Oct 2026css/css-backgrounds/parsing

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

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total92.47%(57/74)77.03%(830/916)90.61%
TestSubtestsSubtest %Status
background-attachment-computed.html(3/5)60.00%FAIL
background-attachment-invalid.html(2/2)100.00%PASS
background-attachment-valid.html(1/2)50.00%FAIL
background-clip-computed.html(6/11)54.55%FAIL
background-clip-invalid.html(5/5)100.00%PASS
background-clip-valid.html(3/9)33.33%FAIL
background-color-computed.html(7/7)100.00%PASS
background-color-invalid.html(3/3)100.00%PASS
background-color-valid.html(9/9)100.00%PASS
background-computed.html(31/39)79.49%FAIL
background-image-computed.sub.html(47/48)97.92%FAIL
background-image-invalid.html(12/12)100.00%PASS
background-image-valid.html(3/13)23.08%FAIL
background-invalid.html(2/2)100.00%PASS
background-origin-computed.html(7/7)100.00%PASS
background-origin-invalid.html(4/4)100.00%PASS
background-origin-valid.html(4/4)100.00%PASS
background-position-computed.html(32/32)100.00%PASS
background-position-invalid.html(11/11)100.00%PASS
background-position-valid.html(31/31)100.00%PASS
background-position-x-computed.html(16/19)84.21%FAIL
background-position-x-invalid.html(9/9)100.00%PASS
background-position-x-valid.html(12/15)80.00%FAIL
background-position-y-computed.html(16/19)84.21%FAIL
background-position-y-invalid.html(9/9)100.00%PASS
background-position-y-valid.html(12/15)80.00%FAIL
background-repeat-computed.html(13/13)100.00%PASS
background-repeat-invalid.html(3/3)100.00%PASS
background-repeat-valid.html(4/4)100.00%PASS
background-shorthand-serialization.html(6/11)54.55%FAIL
background-size-computed.html(16/16)100.00%PASS
background-size-invalid.html(3/3)100.00%PASS
background-size-valid.html(9/9)100.00%PASS
background-valid.html(17/46)36.96%FAIL
border-color-computed.html(8/8)100.00%PASS
border-color-invalid.html(3/3)100.00%PASS
border-color-shorthand.html(20/20)100.00%PASS
border-color-valid.html(7/7)100.00%PASS
border-image-invalid.html(17/17)100.00%PASS
border-image-outset-computed.html(5/7)71.43%FAIL
border-image-outset-invalid.html(5/5)100.00%PASS
border-image-outset-valid.html(3/3)100.00%PASS
border-image-repeat-computed.html(3/3)100.00%PASS
border-image-repeat-invalid.html(2/2)100.00%PASS
border-image-repeat-valid.html(3/3)100.00%PASS
border-image-shorthand.sub.html(30/30)100.00%PASS
border-image-slice-computed.html(5/7)71.43%FAIL
border-image-slice-invalid.html(6/6)100.00%PASS
border-image-slice-valid.html(4/4)100.00%PASS
border-image-source-computed.sub.html(9/10)90.00%FAIL
border-image-source-invalid.html(2/2)100.00%PASS
border-image-source-valid.html(2/2)100.00%PASS
border-image-valid.html(30/30)100.00%PASS
border-image-width-computed.html(12/12)100.00%PASS
border-image-width-invalid.html(5/5)100.00%PASS
border-image-width-valid.html(5/5)100.00%PASS
border-invalid.html(3/3)100.00%PASS
border-radius-computed.html(14/14)100.00%PASS
border-radius-invalid.html(11/11)100.00%PASS
border-radius-valid.html(23/23)100.00%PASS
border-shorthand.html(36/36)100.00%PASS
border-style-computed.html(8/8)100.00%PASS
border-style-invalid.html(2/2)100.00%PASS
border-style-shorthand.html(20/20)100.00%PASS
border-style-valid.html(8/8)100.00%PASS
border-valid.html(6/6)100.00%PASS
border-width-computed.html(11/11)100.00%PASS
border-width-invalid.html(3/3)100.00%PASS
border-width-shorthand.html(20/20)100.00%PASS
border-width-valid.html(6/6)100.00%PASS
box-shadow-computed.html(4/4)100.00%PASS
box-shadow-invalid.html(40/40)100.00%PASS
box-shadow-valid.html(38/38)100.00%PASS
webkit-border-radius-valid.html(23/25)92.00%FAIL