/* After Firefox 69 for userChrome.css to work, about:config toolkit.legacyUserProfileCustomizations.stylesheets --> True
https://github.com/mbnuqw/sidebery/wiki/Firefox-Styles-Snippets-(via-userChrome.css)*/

/* hide titlebar: https://www.reddit.com/r/FirefoxCSS/comments/f9hnt3/how_to_disable_or_hide_the_title_barminimizeclose/*/
#titlebar {
visibility: collapse !important;
}

/* hides the native tabs, needed in addition to 'hide titlebar:' after Firefox 133 to hide top bar tabs and titlebar */
#TabsToolbar {
  visibility: collapse;
}

/* Hide back/forward buttons: https://www.reddit.com/r/FirefoxCSS/comments/8nogqc/can_i_hide_backforward_buttons_next_to_the/ */
#forward-button, #back-button {
display: none !important;
}

/* remove 'Tree Style Tab' header from sidebar
https://www.reddit.com/r/firefox/comments/72kt5x/tree_style_tab_its_finally_here/*/
#sidebar-header {
  display: none;
}

/* Hide 157.0 sidebar panel header:
1. devtools.chrome.enabled = true
2. devtools.debugger.remote-enabled = true
3. Tools → Browser Tools → Browser Toolbox -> Use element picker*/
#sidebar-panel-header {
display: none !important;
}