grid-flow and col-span don't work with responsive

[safejace]

as reported on discord: https://discord.com/channels/787967399105134612/787968902058999818/994634667452022795

md:grid-columns-4 is overriding lg:grid-columns-3 on large screens?

my window is over 992px wide. but the medium class is taking precedence

same issue with col-spa

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whereas if i put text-{size} it works as expected