[css-grid] respect `justify-content: center` even when column width is fluid and has max-width using `auto-fit/fill`

[emattias]

To my knowledge you can't make css grid respect justify-content: center and also keep the fluid width and has max-width when using repeat(auto-fit/fill).

See this codepen. In the first grid the columns are left aligned. I would like them to be centered like in the second grid (since justify-content: center is set on the container).

This might be related to this issue: #2611

[emattias]

Another option might be to add support to do grid-template-columns: repeat(auto-fit, clamp(100px, 1fr, 200px));

The new (currently unsupported) value is to support for the middle value here being 1fr: clamp(100px, 1fr, 200px). Why is that not supported now?