diff --git a/chrome/autohide_bookmarks_and_main_toolbars.css b/chrome/autohide_bookmarks_and_main_toolbars.css
index eeda8af..ab34ffe 100644
--- a/chrome/autohide_bookmarks_and_main_toolbars.css
+++ b/chrome/autohide_bookmarks_and_main_toolbars.css
@@ -23,7 +23,7 @@ See the above repository for updates as well as full license text. */
  *  density settings and whether or not menubar is enabled.
  */
 @media (min-resolution: 120dpi){
-  :root[uidensity="compact"] #navigator-toolbox:has(> #toolbar-menubar:is([autohide="false"],not([autohide]))){
+  :root[uidensity="compact"] #navigator-toolbox:has(> #toolbar-menubar:is([autohide="false"],:not([autohide]))){
     --uc-toolbox-browser-area-overlap: -0.5px;
   }
 }
diff --git a/chrome/click_selected_tab_to_focus_urlbar.css b/chrome/click_selected_tab_to_focus_urlbar.css
index b25f59f..fd1212e 100644
--- a/chrome/click_selected_tab_to_focus_urlbar.css
+++ b/chrome/click_selected_tab_to_focus_urlbar.css
@@ -23,7 +23,7 @@ See the above repository for updates as well as full license text. */
   :root:is([sizemode="maximized"],[sizemode="fullscreen"]){
     --uc-window-drag-space-width: 0px;
   }
-  #toolbar-menubar:is([autohide="false"],not([autohide])) ~ #nav-bar{
+  #toolbar-menubar:is([autohide="false"],:not([autohide])) ~ #nav-bar{
     --uc-window-drag-space-width: 0px;
     --uc-menubar-height: 28px;
   }
diff --git a/chrome/hide_tabs_toolbar_v2.css b/chrome/hide_tabs_toolbar_v2.css
index 314a636..325f927 100644
--- a/chrome/hide_tabs_toolbar_v2.css
+++ b/chrome/hide_tabs_toolbar_v2.css
@@ -27,7 +27,7 @@ See the above repository for updates as well as full license text. */
   :root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
     display: flex !important;
   }
-  :root:is([tabsintitlebar],[customtitlebar]) #toolbar-menubar:is([autohide=""],not([autohide="false"])) ~ #nav-bar{
+  :root:is([tabsintitlebar],[customtitlebar]) #toolbar-menubar:is([autohide=""],:not([autohide="false"])) ~ #nav-bar{
     > .titlebar-buttonbox-container{
       display: flex !important;
     }
diff --git a/chrome/oneline_toolbar.css b/chrome/oneline_toolbar.css
index da21a38..c5b0328 100644
--- a/chrome/oneline_toolbar.css
+++ b/chrome/oneline_toolbar.css
@@ -59,7 +59,7 @@ See the above repository for updates as well as full license text. */
         :root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
           display: flex !important;
         }
-        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],not([autohide="false"]))){
+        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],:not([autohide="false"]))){
           + #TabsToolbar{
             :root[sizemode="normal"] & {
               > .titlebar-spacer[type="post-tabs"]{
@@ -79,7 +79,7 @@ See the above repository for updates as well as full license text. */
         :root[sizemode="fullscreen"] #TabsToolbar > .titlebar-buttonbox-container{
           display: flex !important;
         }
-        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],not([autohide="false"]))){
+        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],:not([autohide="false"]))){
           + #TabsToolbar > :is(.titlebar-buttonbox-container,.titlebar-spacer[type="post-tabs"]){
             display: flex !important;
           }
@@ -100,7 +100,7 @@ See the above repository for updates as well as full license text. */
         :root[sizemode="fullscreen"] #TabsToolbar > .titlebar-buttonbox-container{
           display: flex !important;
         }
-        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],not([autohide="false"]))){
+        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],:not([autohide="false"]))){
           + #TabsToolbar > :is(.titlebar-buttonbox-container,.titlebar-spacer[type="pre-tabs"]){
             display: flex !important;
           }
@@ -118,7 +118,7 @@ See the above repository for updates as well as full license text. */
         :root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
           display: flex !important;
         }
-        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],not([autohide="false"]))){
+        :root[customtitlebar] :where(#toolbar-menubar:is([autohide=""],:not([autohide="false"]))){
           :root[sizemode="normal"] & {
             + #TabsToolbar > .titlebar-spacer[type="pre-tabs"]{
               display: flex !important;
diff --git a/chrome/tabs_below_content_v2.css b/chrome/tabs_below_content_v2.css
index 33ba5cc..46d8d44 100644
--- a/chrome/tabs_below_content_v2.css
+++ b/chrome/tabs_below_content_v2.css
@@ -39,7 +39,7 @@ See the above repository for updates as well as full license text. */
   :root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
     display: flex !important;
   }
-  :root[customtitlebar] #toolbar-menubar:is([autohide=""],not([autohide="false"])) ~ #nav-bar{
+  :root[customtitlebar] #toolbar-menubar:is([autohide=""],:not([autohide="false"])) ~ #nav-bar{
      > .titlebar-buttonbox-container{
       display: flex !important;
     }
diff --git a/chrome/tabs_on_bottom_v2.css b/chrome/tabs_on_bottom_v2.css
index 89eeaad..5ba905a 100644
--- a/chrome/tabs_on_bottom_v2.css
+++ b/chrome/tabs_on_bottom_v2.css
@@ -24,7 +24,7 @@ See the above repository for updates as well as full license text. */
   :root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
     display: flex !important;
   }
-  :root[customtitlebar] #toolbar-menubar:is([autohide=""],not([autohide="false"])) ~ #nav-bar{
+  :root[customtitlebar] #toolbar-menubar:is([autohide=""],:not([autohide="false"])) ~ #nav-bar{
     > .titlebar-buttonbox-container{
       display: flex !important;
     }
diff --git a/chrome/vertical_tabs.css b/chrome/vertical_tabs.css
index 3329095..5363419 100644
--- a/chrome/vertical_tabs.css
+++ b/chrome/vertical_tabs.css
@@ -57,7 +57,7 @@ See the above repository for updates as well as full license text. */
     right: 0;
   }
 }
-:root:not([customizing]) #toolbar-menubar:is([autohide="false"],not([autohide])) + #TabsToolbar #tabbrowser-tabs{
+:root:not([customizing]) #toolbar-menubar:is([autohide="false"],:not([autohide])) + #TabsToolbar #tabbrowser-tabs{
   height: calc(100vh - 28px); /* 28px is however tall your menubar is */
 }
 :root:not([customizing]) #TabsToolbar #new-tab-button,