Problem Statement
What does `flex: 1 0 200px` mean?
Explanation
`flex` is shorthand for `flex-grow`, `flex-shrink`, and `flex-basis`. Here it means the item can grow to fill space (1), will not shrink (0), and has initial basis 200px. :contentReference[oaicite:5]{index=5}
Code Solution
SolutionRead Only
.box { flex: 1 0 200px; }