Interesting in the substance but my first question that came to mind is about the cool thumbnail/scroll map side pane, anyone know how that's implemented? edit

Interesting in the substance but my first question that came to mind is about the cool thumbnail/scroll map side pane, anyone know how that's implemented? edit: maybe this? https://css-tricks.com/using-the-little-known-css-element-function-to-create-a-minimap-navigator/ https://css-tricks.com/using-the-little-known-css-element-fu...