What does the shorthand `flex: 1` expand to?

flex-grow: 1; flex-shrink: 1; flex-basis: 0%

flex-grow: 1; flex-shrink: 0; flex-basis: auto

flex-grow: 1; flex-shrink: 1; flex-basis: 0%

flex-grow: 1; flex-shrink: 1; flex-basis: auto

flex-grow: 0; flex-shrink: 1; flex-basis: 100%

Which Grid value creates as many equal columns as fit, each at least 200px, expanding to fill space?

repeat(auto-fit, minmax(200px, 1fr))

A fraction of the remaining free space in the container

A percentage of the viewport width

The font-relative size like rem

Master modern CSS layout with Flexbox and Grid: axes, alignment, sizing, and when to reach for each.

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