Make the "next" and "previous" articles tab-able in Firefox

[jenweber]

Right now, there's no way for someone to get to the next page by tabbing if they are using Firefox.

The goal is that if I hit tab some number of times, the link to the next article is selected, and I can hit enter to move to the next page.

This can probably be done with tab index alone, but I'm not sure.

GitHub has a nice example of good tabbing behavior https://github.com/cardstack

Also read and try tabbing through https://developers.google.com/web/fundamentals/accessibility/how-to-review?utm_source=lighthouse&utm_medium=devtools#start_with_the_keyboard

[jenweber]

[skarabocu]

This link might be useful: https://www.alexlande.com/articles/cross-browser-tabindex-woes/