HTML & CSS

Markup and styling fundamentals

HTML & CSS
How to create a responsive navigation bar with pure CSS

Build a mobile-friendly menu that switches to a hamburger icon on small screens without JavaScript using only CSS and th…
HTML & CSS
How to use CSS custom properties for theming

Define color, spacing, and font variables in one place. Override them globally or per-class without editing every rule.…
HTML & CSS
How to center a div with CSS Grid

Center any HTML element horizontally and vertically using the modern CSS Grid Layout. Use the `place-items` shorthand to…
HTML & CSS
How to hide content on mobile with CSS media queries

Learn to use CSS media queries to display different content on desktop and mobile devices. This guide covers hiding spec…