writing-mode

A reference guide to the CSS `writing-mode` property, which controls whether text flows horizontally or vertically and the direction blocks progress. Covers all five values (horizontal-tb, vertical-rl, vertical-lr, sideways-rl, sideways-lr), explains how writing modes establish block and inline axes that underpin Flexbox, Grid, and logical properties like `inline-size` and `block-size`, and includes an interactive demo with language and direction selectors.