https://una.im/scroll-target-group
una.im | Creating a scroll-spy with 2 lines of CSS
scroll-target-group is a new CSS feature that lets you create scroll-spy table of contents with basically 2 lines of CSS.
scroll spyunaimcreatinglines
https://nerdy.dev/pure-css-scroll-spy-table-of-contents
Pure CSS Scroll Spy Table Of Contents ยท January 15, 2025
pure cssscroll spytable
https://wpgutenkit.com/modules/scroll-spy/
Scroll Spy - GutenKit
May 25, 2025 - Scrollspy monitors which section of the page is currently visible in the viewport and automatically updates the corresponding navigation link by toggling an
scroll spygutenkit