Tailwind CSS — 177 sites
Tailwind CSS has become the default styling layer for SaaS marketing sites. Study how these teams compose consistent spacing, type and color with utility-first CSS.
Tailwind's utility-first approach — writing `flex gap-4 text-lg` directly in markup rather than naming a custom CSS class — has become the default for SaaS marketing sites mainly because it enforces consistency almost by accident: a design system's spacing scale, type sizes and color palette are defined once in config and every utility class pulls from that same constrained set, which makes it structurally harder to introduce an off-brand one-off value than it would be writing free-form CSS. The visible tell of a well-executed Tailwind site isn't the framework itself (it's invisible in the shipped output) — it's the consistency: spacing that always steps in the same increments, a type scale with a clear number of sizes rather than dozens of slightly-different ones, which is a discipline Tailwind makes easier to maintain but doesn't guarantee on its own.