This gives you ready-to-use patterns for the most common responsive layouts: holy grail, card grids, sidebars, hero sections, and masonry. It includes both Tailwind and plain CSS examples, which is helpful when you're jumping between projects. The mobile-first approach is baked into every pattern, and you get practical breakpoint guidelines based on Tailwind's defaults. The flexbox versus grid decision table is actually useful when you're staring at a layout trying to figure out which tool to reach for. Container queries are in here too, though browser support might still be a consideration depending on your audience. The testing checklist at the end with actual device widths beats guessing at breakpoints.
npx skills add https://github.com/onewave-ai/claude-skills --skill responsive-layout-builder