Here's a visual guide to the most popular CSS selectors.

htmx allows you to access AJAX, WebSockets and Server Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext

Easily create sites that work offline as well as online. UpUp is a tiny JavaScript library that makes sure your users can always access your site's content, even when they're on a plane, in an elevator, or 20,000 leagues under the sea.