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Dataset 20261011-0550-f160c57 · measured 2026-10-11 05:50 UTC
columns
◐matches Chrome on some values2 of 7 examples match Chromecss-multicol-2
Some of the examples match Chrome and some do not. The count beside the verdict says how many — 11 of 12 — and the values that differ are listed on the property page. It is neither a pass nor a failure, and filing it under either would be a lie in one direction.
Here: 2 of 7 examples match Chrome. The 5 that do not: columns:20px / 20px, columns:2, columns:auto, columns:8, columns:3 — shown first below, each with its difference map.
What the specification says
- Initial value
- see individual properties
- Applies to
- see individual properties
- Inherited
- see individual properties
- Percentages
- see individual properties
- Computed value
- see individual properties
- Syntax
- [ <'column-width'> || <'column-count'> ] [ / <'column-height'> ]?
The measurements
7 examples, 2 of them matching Chrome, the rest first. Each is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
columns:20px / 20px✕renders differently
Our renderChrome10,214 pixels differ from Chrome, the largest by 255 of 255 on one channel.
- Differing pixels
- 10,214
- Max channel delta
- 255
columns:2✕renders differently
Our renderChrome1,844 pixels differ from Chrome, the largest by 238 of 255 on one channel.
- Differing pixels
- 1,844
- Max channel delta
- 238
columns:auto✕renders differently
Our renderChrome2,456 pixels differ from Chrome, the largest by 238 of 255 on one channel.
- Differing pixels
- 2,456
- Max channel delta
- 238
columns:8✕renders differently
Our renderChrome1,488 pixels differ from Chrome, the largest by 255 of 255 on one channel.
- Differing pixels
- 1,488
- Max channel delta
- 255
columns:3✕renders differently
Our renderChrome18,816 pixels differ from Chrome, the largest by 255 of 255 on one channel.
- Differing pixels
- 18,816
- Max channel delta
- 255
columns:20px✓pixel-exact
Our renderChrome1,424 pixels differ from Chrome, the largest by 238 of 255 on one channel.
- Differing pixels
- 1,424
- Max channel delta
- 238
columns:20px / auto✓pixel-exactOur renderChrome1,424 pixels differ from Chrome, the largest by 238 of 255 on one channel.
- Differing pixels
- 1,424
- Max channel delta
- 238
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 7 branches; 5 of them carry a measurement. The publishing ceiling is 12 examples per property — a branch past it is left out by our choice, not by accident.
| Value | Measured |
|---|---|
| 20px | ✓pixel-exact |
| min-content | not measured |
| max-content | not measured |
| 2 | ✕renders differently |
| 20px / 20px | ✕renders differently |
| 20px / auto | ✓pixel-exact |
| auto | ✕renders differently |
Measured against Chrome 148.0.7778.96 on 2026-10-11, with up to 40 candidate values tried per property. All properties · How the measurement works