Updated :focus to be viewable on all ui elements and instances.

Includes updating the mixin, several css rules and adjustments on a few UI elements for proper rendering.

Requires: https://github.com/sg00dwin/li/commit/09bf8621b8161cb5ad55462def1ec298b449acc5

Requires: https://github.com/sg00dwin/li/commit/c7719bccd3b2c241519a72ca792f20488824bf19

Requires: https://github.com/sg00dwin/li/commit/07db2dbcebeafc00e236cdf1d0e1fc39a42006b2