1 CSS Accordion

A CSS accordion is a UI component that creates vertically stacked, collapsible content panels using only HTML and CSS, without any JavaScript. It is an effective way to organize large amounts of information, such as in an FAQ section, in a compact and user-friendly manner. The functionality is typically achieved using the checkbox hack, where a hidden checkbox or radio input is paired with a visible label that acts as the clickable header. When the user clicks the label, the input's state changes to checked. CSS selectors, specifically the checked pseudo-class and sibling combinators, are then used to target and reveal the content panel associated with that input. This pure CSS method is lightweight and performant. This collection showcases a variety of accordion components built with this technique, providing examples of different styles and demonstrating how to build this useful component from scratch.