Why Keyboard Users Canโt Scroll Your Overflow Containers, by @csstricks:
https://css-tricks.com/why-keyboard-users-cant-scroll-your-overflow-containers/

Why Keyboard Users Can't Scroll Your Overflow Containers | CSS-Tricks
When a keyboard user Tabs into the table, its focus lands on a cell. Then they press the arrow keys to read across the row but nothing happens. Your screen reader users never noticed because they navigate the accessibility tree, not the scroll container.








