About this collection

This is a small, growing collection of self-contained explainers. Each one takes a single topic and lays it out clearly on one HTML page, with a markdown (.md) file outlining how the guide was made.

The design principle

Every page here is fully self-contained. That means:

• No CDN links and no external JavaScript libraries.
• No Google Fonts or any other web fonts, only the system font stack.
• No analytics, trackers, or runtime network calls.
• All CSS is inline, so a single .html file is the whole guide.

Each page loads instantly and works offline. You can save any one of them and it stands on its own.