gvim 8 is based on gtk3, how to define the tab style in ~/.config/gtk-3.0/gtk.css?
Use gtk inspector to view the element structure:
GTK_DEBUG=interactive gvim
@define-color VIM_BG_FIX #3C4C55; window#vim-main-window { background-color: @VIM_BG_FIX; } window#vim-main-window notebook header { background-color: #1E272C; border-bottom-width: 0; } window#vim-main-window notebook tab { border-bottom-width: 0; } window#vim-main-window notebook tab label { padding-left:5px; padding-right:5px; padding-top:1px; padding-bottom:2px; color: #7CBDC6; } window#vim-main-window notebook tab:checked label { background-color: #7CBDC6; color: #1E272C; }
Use gtk inspector to view the element structure: