About this website

Astro generates static HTML. Tailwind CSS handles layout and typography. The site is hosted on Cloudflare Pages.

Inter is self-hosted. No third-party font requests run when pages load.

Pages use semantic landmarks, skip links, visible focus styles, and descriptive link text. Dutch and English versions are linked with hreflang.

The footer includes an AChecker badge for ongoing WCAG 2.0 Level AAA checks.

Assets are pre-rendered at build time. Critical CSS is inlined. Images and fonts use modern formats where it helps.

Lighthouse badges are generated with lighthouse-badges and refreshed with pnpm lighthouse:badges.

The Nu HTML Checker scans embedded CSS in <style> tags as well as markup. A clean document tree can still show CSS errors when the checker’s rule set lags behind what browsers ship.

Tailwind CSS v4 is the main source on this site. It emits @property rules so custom properties animate correctly. Browsers that support Tailwind’s targets apply these rules; the W3C tools do not list @property yet.

The checker also flags custom properties in transition-property (for example --tw-gradient-from) and margin-trim inside @supports queries. Both are valid in current CSS modules and work in supporting browsers.

After each build, a script strips some of these patterns from production HTML so the standalone W3C CSS Validator stays clean. The Nu checker may still list what remains. Those messages describe validator coverage, not broken pages.