Prevent content from expanding grid items

Question

TL;DR: Is there anything like table-layout: fixed for CSS grids?

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I tried to create a year-view calendar with a big 4x3 grid for t

Answer 1

The previous answer is pretty good, but I also wanted to mention that there is a fixed layout equivalent for grids, you just need to write minmax(0, 1fr) instead of 1fr as your track size.