HTML (HyperText Markup Language) is the standard markup language used to create web pages. It provides the structure and content of websites by using a system of tags and elements that tell web browsers how to display text, images, links, and other media.
Click on any section header to expand or collapse the content below it. The arrow icon will rotate to indicate the current state. This type of widget is useful for organizing information and reducing the initial visual clutter on a page.
The implementation uses HTML buttons for accessibility, CSS transitions for smooth animations, and JavaScript for interactivity.
This expand/collapse widget is supported in all modern browsers including: