Recent Commits to firefox-csshacks:master

hide tabs w one tab: remove invalid comment

hide tabs w one tab: have separate rules for vertical tabs enabled / disabled

multi-column-addons: set grid layout with !important

hide tabs with one tab: fix nav-bar window controls visibility again

Merge branch 'nova'

hide tabs with one tab: use custom property for navbar window control display

This effectively decreases the speficity of rules, which helps to get
correct behavior when used with tabs_on_bottom_v2.css.

urlbar popup full width: limit .urlbarView rules to #urlbar

vertical tabs: use grid layout for tabbrowser-tabs

vertical bookmarks toolbar: make toolbox have overflow: visible with nova

Change how urlbar background positioning works when it is below content

Urlbar positioning changed a lot in bug 2065901

non floating sharp tabs: improvements to selected tab background handling

effect scale on click: fix missing colon and add support for vpn button

autohide bookmarks toolbar: fixes for nova

floating findbar: add missing bottom border to findbar close button

floating findbar: Use named grid-area for findbar when available

Findbar is placed into "findbar" grid-area in Firefox 155, so lets
put it into "notificationbox" instead. Fixes #661

autohide sidebar: apply optional hide main-sidebar rule to #sidebar-container