Problem Statement
Which is **not** a valid value of flex-direction?
Explanation
Valid values for `flex-direction` include `row`, `row-reverse`, `column`, and `column-reverse`. `baseline` is not a valid direction. `baseline` is used in alignment contexts (like align-items) but not for direction. :contentReference[oaicite:4]{index=4}
Code Solution
SolutionRead Only
.container { flex-direction: column-reverse; }