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Dataset 20260827-2142-2f1b575 · measured 2026-08-27 21:42 UTC
max-width
✓pixel-exactcss-sizing-3
Our rendering of the example is identical to Chrome's, pixel for pixel — no further apart than the example's own noise floor.
What the specification says
- Initial value
- none
- Applies to
- all elements that accept width or height
- Inherited
- no
- Percentages
- relative to width/height of containing block
- Computed value
- as specified, with <length-percentage> values computed
- Syntax
- none | <length-percentage [0,∞]> | min-content | max-content | fit-content(<length-percentage [0,∞]>) | <calc-size()> | <anchor-size()> | stretch | fit-content | contain
The measurements
Each example is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
max-width:4px✓pixel-exact
Our renderChrome8 pixels differ from Chrome, the largest by 64 of 255 on one channel.
- Differing pixels
- 8
- Max channel delta
- 64
max-width:min-content✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
max-width:max-content✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
max-width:fit-content✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
max-width:50%✓pixel-exact
Our renderChrome1,402 pixels differ from Chrome, the largest by 45 of 255 on one channel.
- Differing pixels
- 1,402
- Max channel delta
- 45
max-width:20px✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
max-width:calc(20px + 4px)✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
max-width:40%✓pixel-exact
Our renderChrome1,402 pixels differ from Chrome, the largest by 45 of 255 on one channel.
- Differing pixels
- 1,402
- Max channel delta
- 45
max-width:calc(40% + 20px)✓pixel-exact
Our renderChrome1,402 pixels differ from Chrome, the largest by 45 of 255 on one channel.
- Differing pixels
- 1,402
- Max channel delta
- 45
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 8 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 |
| 50% | ✓pixel-exact |
| min-content | ✓pixel-exact |
| max-content | ✓pixel-exact |
| stretch | not measured |
| fit-content | ✓pixel-exact |
| contain | not measured |
| none | not measured |
Measured against Chrome 148.0.7778.96 on 2026-08-27, with up to 40 candidate values tried per property. All properties · How the measurement works