Re: [csswg-drafts] [css-grid-1][css-grid-2] Basic support for "equal gutter" with justify-content on grid items

Another issue that I'd like to note down here is how we want to deal with the different scenarios producing overflow:

- height: auto - we will use the gaps to compute the final height. However, this new Content Distribution value will add extra size. Would this imply overflowing even with height auto ? Should we use the Content Distribution extra space, added to preserve the aspect ratio to compute the final grid's height ?

- height: fixed - I'm not sure if this new value, intended to preserve the aspect ratio, should end up causing an overflow.  I think aspect-ratio preservation should only be allowed with height: auto. 

In general, I find it weird that properties that were initially defined to "distribute the available free space" ended up adding extra space, even when there is no free space left. 

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