The syntax for [position](https://drafts.csswg.org/css-values-4/#typedef-position) has limited alternatives: ``` <position> = [ [ left | center | right ] || [ top | center | bottom ] | ``` 1 or 2 values ``` [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | ``` 1 or 2 values ``` [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ] ``` 4 values > Right, I'm pointing out that 3-value syntaxes that use 'center' as one of the keywords (e.g. center top 3px) are still valid with the change How is that still valid? -- GitHub Notification of comment by ewilligers Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/2140#issuecomment-356683236 using your GitHub accountReceived on Wednesday, 10 January 2018 17:55:38 UTC
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