Add base styles for :visited links

[github-actions[bot]]

Unit Test Results

    1 files      1 suites   0s :stopwatch: 265 tests 263 :heavy_check_mark: 0 :zzz: 0 :x: 2 :fire: 265 runs  261 :heavy_check_mark: 0 :zzz: 2 :x: 2 :fire:

For more details on these errors, see this check.

Results for commit 1a29b34f.

[github-actions[bot]]

🔎 Download the Backstop report for this pull request (link valid for 90 days):

• backstop-report.zip