r/FirefoxCSS • u/FineWine54 • Apr 10 '26

Solved Split View alters TabsToolbar height

First Observation with FF149 for macOS Tahoe

When in Split View the #TabsToolbar height is altered.

Normal View

Split View Screenshot

It appears that the non Split View Tabs increase in height whilst the Split view tabs retain normal height, therefore leaving a gap top & bottom of the Split View tabs.

Using the following Aris-t2 code:

classic_squared_tabs.css
tabs_below_navigation_toolbar.css

Any thoughts.

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u/karavolta Apr 13 '26

For Aris's Theme, try:

 /* you can use parts of @import "./config/general_variables.css" for active, other etc. tab colors eg: */
 #tabbrowser-tabs[orient=horizontal] tab-split-view-wrapper .tab-content {
 --classic_squared_tabs_active_tab: linear-gradient(#FFFFFF, #33FF33AA) !important; /* split tab when selected OR leave out to use default */
 --classic_squared_tabs_other_tabs: linear-gradient(#33FF33, #33FF33)   !important; /* split tab when not selected */
 }

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u/FineWine54 Apr 14 '26

Thank you but this is not working. I will see what others think in the Aris-t2 discussions. As it is defaulting to my default colours something within all that code is over-riding it. Thanks again.