Description

For links that are styled like buttons, the focus text color is hard to read if the link destination has already been visited.

Steps to reproduce

1.) Visit https://www.mozilla.org/en-US/about/
2.) Click on the "Read our Mission" cta button.
3.) Once on the mission page, press the browser back button.
4.) Now using the keyboard tab to focus on the cta button again.

Expected result

The button text should be readable.

Actual result

The button text has contrast issues:

Environment

Firefox Nightly