Self-hosted assets. Optional analytics.
Pages are static HTML, with styles, application scripts and one typeface, Albert Sans, served from this domain. When enabled, Cloudflare Web Analytics adds an external script to count visits and measure page performance without cookies or tracking visitors across other websites. There is no advertising code. Cloudflare may set a necessary security cookie, as explained in our privacy policy.
Built for a strict security policy.
The site’s executable scripts are separate files. Its content security policy restricts scripts and connections to the site and the specific Cloudflare services needed when analytics is enabled. The security.txt file explains how to report a vulnerability.
Fast by design.
Styles and scripts are minified static assets. Shared core scripts provide navigation and common controls, while page-specific scripts support the features used on each page. Responsive images offer AVIF and WebP sources so the browser can choose an appropriate file for the screen and pixel density. Declared image dimensions help reserve space while files load.
Built for inspection.
- Semantic landmarks, skip links and visible focus help people navigate with a keyboard.
- Responsive layouts adapt to phone, tablet and desktop screens.
- The main content remains available without JavaScript; scripts add the interactive instruments and walkthroughs.
- Reduced-motion and print styles offer alternative ways to use the pages.
- An RSS feed carries the engineering notes. Selected notes also have a PDF edition.
Motion with manners.
The home page has no always-running scroll animation. Content and navigation remain available without animation, and reduced-motion settings limit motion where it is used.
X-ray mode.
Switch on X-ray mode in the footer of any page to inspect the grid, sections, components and their measured sizes and type. Its script loads on first use.
Our accessibility statement describes the accessibility features and how to report a problem.