You can now see where you are when you tab through a form

If you use a keyboard rather than a mouse to move through the site, you need to be able to see which control you are on. On our checkboxes and radio buttons, you could not.

The reason was a detail of how they are built. The real checkbox is hidden and a styled box is drawn in its place, and the only thing that changed when you tabbed to one was that box going from white to a very slightly greyer white. That is the same thing it already did when you simply hovered over it. In practice that meant tabbing through the job filters, your notification settings, the get-started questions or any of our submission forms with no reliable way to tell where you were.

Now every one of them draws a clear blue ring when the keyboard reaches it, matching the other controls on the site. It appears for keyboard use only, so clicking with a mouse does not leave a ring behind.

This is part of our ongoing work against WCAG 2.2 AA, and it is now checked automatically: a browser walks twelve of our busiest pages, presses Tab through more than a thousand stops, and fails the build if focus ever lands somewhere you could not see.