CSS
flex-direction: row(Default)justify-content: centercenters items horizontally.align-items: centercenters items vertically.
flex-direction: columnjustify-content: centercenters items vertically.align-items: centercenters items horizontally
align-items: start (or flex-start) aligns items to the top edge of the container, ignoring font sizes, while align-items: baseline aligns items so their text baselines sit on the same line, regardless of item heights or font sizes. Use start to align elements by their top border; use baseline to align mixed-size text content cleanly.
