Tim van der Meij 5193adf1fd
Group and scope the secondary toolbar rules using CSS nesting
The secondary toolbar CSS rules predate the general availability of CSS
nesting, which makes them more difficult to understand and change
safely. The primary issues are that the rules are spread over the
`viewer.css` file, they share blocks with other elements and the scope
of the rules is sometimes bigger than necessary.

This refactoring groups all remaining secondary toolbar rules together,
scoped to the top-level `#secondaryToolbar` element, for improved
overview and isolation. Note that this patch only intends to move the
existing rules around and not change any behavior.

Co-authored-by: Calixte Denizet <calixte.denizet@gmail.com>
2024-08-11 18:27:04 +02:00
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