Docs.rs: #1164 introduces weird navbar item focus behavior

[cynecx]

After https://github.com/rust-lang/docs.rs/pull/1164 I am seeing:

caused by:

https://github.com/rust-lang/docs.rs/blob/b728426b65e67dc84c568da6bab4ebe59c4ad9cc/templates/style/_navbar.scss#L47-L52

[jyn514]

@cynecx do you have a suggestion to make this not flicker on hover while still keeping the old behavior for other menus? We can revert https://github.com/rust-lang/docs.rs/pull/1164 but I'd prefer to fix both issues if possible.

[cynecx]

Hm, I didn’t have the time to actually look into the PR and the issue here except that disabling those css rules fixes the weird behavior. I am also very short on time right now. Perhaps @pickfire? Though, I might look into it tomorrow or so.

[pickfire]

Ah, that PR fixed something but I didn't know it causes regression, I didn't check on the light theme to get to see this behavior.

[pickfire]

I believe it is caused by both activating at the same time, one taking from focus (color) and one from hover (background-color).