Implement color schemes that automatically adapt to a user's system preferences using the light-dark() CSS function. Interactive Components (No JavaScript Needed)

Use fixed background images that move at a different speed than the foreground content to create depth.

Utilize the new Popover API ( popover attribute) to create native pop-up menus or info boxes without any script.

Use the and tags with a shared name attribute to create a functional accordion where only one section stays open at a time.

Enhance navigation by adding scroll-behavior: smooth; to your HTML, allowing links to glide to specific sections of the page. 10 cool things you can do with CSS only