current/css/tabs/tabs_below_titlebar_above_navigation_toolbar.css
/* Firefox userChrome.css tweaks ********************************************************/
/* Github: https://github.com/aris-t2/customcssforfx ************************************/
/****************************************************************************************/


#main-window:is([tabsintitlebar],[customtitlebar])[sizemode="normal"] #TabsToolbar,
#main-window[uidensity=compact]:is([tabsintitlebar],[customtitlebar])[sizemode="normal"] #TabsToolbar{
  padding-inline-start: 2px !important;
  margin-top: 3px !important;
}

#main-window:is([tabsintitlebar],[customtitlebar])[sizemode="maximized"] #toolbar-menubar[autohide="false"] ~ #TabsToolbar,
#main-window[uidensity=compact]:is([tabsintitlebar],[customtitlebar])[sizemode="maximized"] #toolbar-menubar[autohide="false"] ~ #TabsToolbar,
#main-window:is([tabsintitlebar],[customtitlebar])[sizemode="maximized"] #toolbar-menubar:not([inactive="true"]) ~ #TabsToolbar,
#main-window[uidensity=compact]:is([tabsintitlebar],[customtitlebar])[sizemode="maximized"] #toolbar-menubar:not([inactive="true"]) ~ #TabsToolbar{
  margin-top: 3px !important;
}

#main-window:is([tabsintitlebar],[customtitlebar])[sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact]:is([tabsintitlebar],[customtitlebar])[sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar{
  padding-inline-start: 2px !important;
  margin-top: 24px !important;
}

#main-window:is([tabsintitlebar],[customtitlebar]) #TabsToolbar .private-browsing-indicator,
#main-window:is([tabsintitlebar],[customtitlebar]) #TabsToolbar #window-controls,
#main-window:is([tabsintitlebar],[customtitlebar]) #TabsToolbar *[type="caption-buttons"],
#main-window:is([tabsintitlebar],[customtitlebar]) #TabsToolbar *[type="pre-tabs"],
#main-window:is([tabsintitlebar],[customtitlebar]) #TabsToolbar *[type="post-tabs"] {
  display: none !important;
}


#main-window:is([tabsintitlebar],[customtitlebar])[sizemode="normal"]:not([inDOMFullscreen="true"]) #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar .titlebar-buttonbox-container {
  position: fixed !important;
  top: 0 !important;
  right: 0 !important;
  visibility: visible !important;
  display: block !important;
}

#navigator-toolbox {
  -moz-window-dragging: drag !important;
}
