• A CSS principle to use each declaration only one time per section, component, or file, within at-rule boundaries. UDJO helps limit repetition (“Don’t Repeat Yourself”) and reduces the need and use for custom properties (CSS variables). UDJO was first mentioned in 2008. ↑ meiert.com/en/blog/dry-css

1. Previous term: Uses page
2. Next term: USP
3. Random term: Opera Mini