chrisnajman/scroll-page-watcher
If your browser supports 'animation-timeline: scroll()' CSS, a horizontal line will appear at the top of the screen as you scroll, indicating how far you have travelled down the page.
HTMLMIT
If your browser supports 'animation-timeline: scroll()' CSS, a horizontal line will appear at the top of the screen as you scroll, indicating how far you have travelled down the page.
HTMLMIT