diff --git a/files b/files
index 2ab9dc3..95e21bd 100644
--- a/files
+++ b/files
@@ -23,4 +23,5 @@ system/grub                    /etc/default/grub
 system/progm.xkb               /usr/share/X11/xkb/symbols/progm
 themes                         ~/.slade3/text_styles/*
 themes/ripcord.json            ~/.local/share/Ripcord/custom_theme.json
+themes/userChrome.css          ~/.mozilla/firefox/*/chrome/userChrome.css
 vim/vimrc                      ~/.vim/vimrc
diff --git a/themes/userChrome.css b/themes/userChrome.css
new file mode 100644
index 0000000..6ec6506
--- /dev/null
+++ b/themes/userChrome.css
@@ -0,0 +1,21 @@
+@-moz-document url("chrome://browser/content/browser.xul") {
+   /* get rid of hamburgers */
+   #PanelUI-menu-button {
+      display: none;
+   }
+
+   /* hide top tabs (for sideberry) */
+   #TabsToolbar {
+      visibility: collapse !important;
+   }
+
+   /* hide sidebar top-menu */
+   #sidebar-header {
+      visibility: collapse;
+   }
+
+   /* change the border between the sidebar and the page */
+   #sidebar-splitter {
+      visibility: collapse;
+   }
+}