How to Do Addition in HTML. Using a few HTML statements and a little JavaScript, you can build your own calculator that performs addition. This task is not as difficult as it seems because HTML ...

Use this handy, simplified guide to quickly learn HTML and CSS -- a foundation of modern web development.

HTML provides the structure, content and layout, CSS adds style and design, and JavaScript adds functionality and interactivity.

HTMX is the HTML extension syntax that replaces JavaScript with simple markup. It could change the course of web development.