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Dataset 20260827-2142-2f1b575 · measured 2026-08-27 21:42 UTC
place-self
✕parsed, no effectcss-align-3
The parser accepts the name, yet our rendering is byte-identical with and without the declaration while Chrome's is not. The declaration is being swallowed.
What the specification says
- Initial value
- auto
- Applies to
- see individual properties
- Inherited
- no
- Percentages
- n/a
- Computed value
- see individual properties
- Syntax
- <'align-self'> <'justify-self'>?
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.
place-self:end✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:self-end✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:flex-end✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:last baseline✕parsed, no effect
Our renderChrome4,800 pixels differ from Chrome, the largest by 187 of 255 on one channel.
- Differing pixels
- 4,800
- Max channel delta
- 187
place-self:center✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:unsafe center✕parsed, no effectOur renderChrome2,998 pixels differ from Chrome, the largest by 187 of 255 on one channel.
- Differing pixels
- 2,998
- Max channel delta
- 187
place-self:safe center✕parsed, no effectOur renderChrome2,998 pixels differ from Chrome, the largest by 187 of 255 on one channel.
- Differing pixels
- 2,998
- Max channel delta
- 187
place-self:anchor-center✕parsed, no effect
Our renderChrome2,998 pixels differ from Chrome, the largest by 187 of 255 on one channel.
- Differing pixels
- 2,998
- Max channel delta
- 187
place-self:center auto✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:center center✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:center unsafe center✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
place-self:center safe center✓pixel-exactOur renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
- Differing pixels
- 0
- Max channel delta
- 0
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 34 branches; 12 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 |
|---|---|
| center | ✓pixel-exact |
| unsafe center | ✕parsed, no effect |
| safe center | ✕parsed, no effect |
| start | not measured |
| end | ✓pixel-exact |
| self-start | not measured |
| self-end | ✓pixel-exact |
| flex-start | not measured |
| flex-end | ✓pixel-exact |
| stretch | not measured |
| baseline | not measured |
| first baseline | not measured |
| last baseline | ✕parsed, no effect |
| anchor-center | ✕parsed, no effect |
| center auto | ✓pixel-exact |
| center center | ✓pixel-exact |
| center unsafe center | ✓pixel-exact |
| center safe center | ✓pixel-exact |
| center normal | not measured |
| center start | not measured |
| center end | not measured |
| center self-start | not measured |
| center self-end | not measured |
| center flex-start | not measured |
| center flex-end | not measured |
| center left | not measured |
| center right | not measured |
| center stretch | not measured |
| center baseline | not measured |
| center first baseline | not measured |
| center last baseline | not measured |
| center anchor-center | not measured |
| auto | not measured |
| normal | 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