diff --git a/userChrome.css b/userChrome.css
index 71518f3..41966b5 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -57,23 +57,23 @@
 /*= Remove Tab Border ========================================================*/
 @supports -moz-bool-pref("userChrome.tab.connect_to_window") {
   /* TARGET: original, photon */
-/* Light Theme */
-#TabsToolbar:not([brighttext])
-  #tabbrowser-tabs:not([noshadowfortests])
-  .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
-  > .tab-stack
-  > .tab-background {
-  border: unset !important; /* Nigtly 96:  1px solid var(--tab-line-color, rgba(128,128,142,0.9)); */
-}
+  /* Light Theme */
+  #TabsToolbar:not([brighttext])
+    #tabbrowser-tabs:not([noshadowfortests])
+    .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
+    > .tab-stack
+    > .tab-background {
+    border: unset !important; /* Nigtly 96:  1px solid var(--tab-line-color, rgba(128,128,142,0.9)); */
+  }
 
-/* Dark Theme */
-#TabsToolbar[brighttext]
-  #tabbrowser-tabs:not([noshadowfortests])
-  .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
-  > .tab-stack
-  > .tab-background:-moz-lwtheme {
-  border: unset !important; /* Nigtly 96: 1px solid var(--tab-line-color, rgba(128,128,142,0.9)) */
-}
+  /* Dark Theme */
+  #TabsToolbar[brighttext]
+    #tabbrowser-tabs:not([noshadowfortests])
+    .tabbrowser-tab:is([visuallyselected="true"], [multiselected])
+    > .tab-stack
+    > .tab-background:-moz-lwtheme {
+    border: unset !important; /* Nigtly 96: 1px solid var(--tab-line-color, rgba(128,128,142,0.9)) */
+  }
 }
 
 /*= Light Weight Theme =======================================================*/
@@ -823,7 +823,7 @@
 
   /* Hard Coded */
   @supports -moz-bool-pref("userChrome.tab.connect_to_window") {
-  :root[lwtheme-mozlightdark][lwt-default-theme-in-dark-mode] /* Legacy */
+    :root[lwtheme-mozlightdark][lwt-default-theme-in-dark-mode] /* Legacy */
     #tabbrowser-tabs:not([movingtab])
     > #tabbrowser-arrowscrollbox
     > .tabbrowser-tab
@@ -835,8 +835,8 @@
     > .tabbrowser-tab
     > .tab-stack
     > .tab-background[selected="true"] {
-    background: color-mix(in srgb, rgb(255, 255, 255) 15%, -moz-dialog) !important;
-  }
+      background: color-mix(in srgb, rgb(255, 255, 255) 15%, -moz-dialog) !important;
+    }
   }
 
   :root:not([customizing="true"]):not(:-moz-lwtheme) tab[visuallyselected] > stack::before,
@@ -2708,11 +2708,11 @@ menuitem.openintabs-menuitem,
 /** Reduce Padding ************************************************************/
 /*= Root - Reduce Padding ====================================================*/
 @supports -moz-bool-pref("userChrome.tab.original") {
-:root {
-  /* Tab Bar */
-  --proton-tab-block-margin: 2px !important; /* Original: 4px, Legacy */
-  --tab-block-margin: 2px !important; /* New version of --proton-tab-block-margin */
-}
+  :root {
+    /* Tab Bar */
+    --proton-tab-block-margin: 2px !important; /* Original: 4px, Legacy */
+    --tab-block-margin: 2px !important; /* New version of --proton-tab-block-margin */
+  }
 }
 :root {
   --inline-tab-padding: 6px !important; /* Original: 8px */
@@ -2835,19 +2835,19 @@ menuitem.openintabs-menuitem,
 }
 
 @supports -moz-bool-pref("userChrome.tab.original") {
-.toolbar-items,
-.tabbrowser-tab {
-  --tabbar-max-height: 38px;
-  max-height: calc(var(--tabbar-max-height) + var(--space-above-tabbar));
-}
-:root[uidensity="compact"] .toolbar-items,
-:root[uidensity="compact"] .tabbrowser-tab {
-  --tabbar-max-height: 36px;
-}
-:root[uidensity="touch"] .toolbar-items,
-:root[uidensity="touch"] .tabbrowser-tab {
-  --tabbar-max-height: 45px;
-}
+  .toolbar-items,
+  .tabbrowser-tab {
+    --tabbar-max-height: 38px;
+    max-height: calc(var(--tabbar-max-height) + var(--space-above-tabbar));
+  }
+  :root[uidensity="compact"] .toolbar-items,
+  :root[uidensity="compact"] .tabbrowser-tab {
+    --tabbar-max-height: 36px;
+  }
+  :root[uidensity="touch"] .toolbar-items,
+  :root[uidensity="touch"] .tabbrowser-tab {
+    --tabbar-max-height: 45px;
+  }
 }
 
 /* Scroll Button - Size Fix */
@@ -3139,45 +3139,45 @@ menupopup > menu {
 
 /** Tab Bar - Connect to window ***********************************************/
 @supports -moz-bool-pref("userChrome.tab.connect_to_window") {
-.tab-background {
-  border-radius: var(--tab-border-radius) var(--tab-border-radius) 0px 0px !important;
-  margin-bottom: 0px !important;
-}
+  .tab-background {
+    border-radius: var(--tab-border-radius) var(--tab-border-radius) 0px 0px !important;
+    margin-bottom: 0px !important;
+  }
 
-.tab-content {
-  margin-top: var(--tab-block-margin);
-}
+  .tab-content {
+    margin-top: var(--tab-block-margin);
+  }
 
-.tab-stack {
-  margin-top: 0px !important;
-  margin-bottom: 0px !important;
-}
+  .tab-stack {
+    margin-top: 0px !important;
+    margin-bottom: 0px !important;
+  }
 
-/* Remove line at Toolbar's top */
-#tabbrowser-tabs {
-  z-index: 1 !important;
-}
-#tabbrowser-arrowscrollbox[overflowing] .tabbrowser-tab[pinned]:is([visuallyselected], [multiselected]) {
-  overflow: hidden;
-}
+  /* Remove line at Toolbar's top */
+  #tabbrowser-tabs {
+    z-index: 1 !important;
+  }
+  #tabbrowser-arrowscrollbox[overflowing] .tabbrowser-tab[pinned]:is([visuallyselected], [multiselected]) {
+    overflow: hidden;
+  }
 }
 
 /** Selected Tab - Color like toolbar *****************************************/
 @supports -moz-bool-pref("userChrome.tab.connect_to_window") {
-:root:not(:-moz-lwtheme) {
-  /* Fix for windows's system default theme. Using --toolbar-bgcolor fallback */
-  --tab-selected-bgcolor: unset !important; /* Original: rgb(255,255,255); */
-}
-#tabbrowser-tabs:not([movingtab])
-  > #tabbrowser-arrowscrollbox
-  > .tabbrowser-tab
-  > .tab-stack
-  > .tab-background[selected="true"]:-moz-lwtheme {
-  /* Original: linear-gradient(var(--lwt-selected-tab-background-color, transparent), var(--lwt-selected-tab-background-color, transparent)), linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none)
+  :root:not(:-moz-lwtheme) {
+    /* Fix for windows's system default theme. Using --toolbar-bgcolor fallback */
+    --tab-selected-bgcolor: unset !important; /* Original: rgb(255,255,255); */
+  }
+  #tabbrowser-tabs:not([movingtab])
+    > #tabbrowser-arrowscrollbox
+    > .tabbrowser-tab
+    > .tab-stack
+    > .tab-background[selected="true"]:-moz-lwtheme {
+    /* Original: linear-gradient(var(--lwt-selected-tab-background-color, transparent), var(--lwt-selected-tab-background-color, transparent)), linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none)
  */
-  background-image: linear-gradient(transparent, transparent),
-    linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none) !important;
-}
+    background-image: linear-gradient(transparent, transparent),
+      linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none) !important;
+  }
 }
 
 /** Multi Selected Color - More Contrast **************************************/
@@ -3202,130 +3202,136 @@ menupopup > menu {
 
 /** Selected Tab - Box Shadow *************************************************/
 @supports -moz-bool-pref("userChrome.tab.original") {
-#TabsToolbar[brighttext]
-  #tabbrowser-tabs:not([noshadowfortests])
-  .tabbrowser-tab[visuallyselected="true"]:not(:focus)
-  > .tab-stack
-  > .tab-background:-moz-lwtheme {
-  /* Origina: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9))
+  #TabsToolbar[brighttext]
+    #tabbrowser-tabs:not([noshadowfortests])
+    .tabbrowser-tab[visuallyselected="true"]:not(:focus)
+    > .tab-stack
+    > .tab-background:-moz-lwtheme {
+    /* Origina: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9))
        Bright: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9)), 0 0 4px rgba(128,128,142,0.5) */
-  box-shadow: 0 0 1px var(--toolbar-color) !important;
-}
-#TabsToolbar[brighttext]
-  #tabbrowser-tabs:not([noshadowfortests])
-  .tabbrowser-tab[multiselected]:not([visuallyselected])
-  > .tab-stack
-  > .tab-background:-moz-lwtheme {
-  box-shadow: 0 0 1px color-mix(in srgb, var(--toolbar-color) 80%, transparent) !important;
-}
+    box-shadow: 0 0 1px var(--toolbar-color) !important;
+  }
+  #TabsToolbar[brighttext]
+    #tabbrowser-tabs:not([noshadowfortests])
+    .tabbrowser-tab[multiselected]:not([visuallyselected])
+    > .tab-stack
+    > .tab-background:-moz-lwtheme {
+    box-shadow: 0 0 1px color-mix(in srgb, var(--toolbar-color) 80%, transparent) !important;
+  }
 
-/* Pinned Tab - tabbrowser-arrowscrollbox overflowing */
-#tabbrowser-tabs[positionpinnedtabs] > #tabbrowser-arrowscrollbox > .tabbrowser-tab[pinned] {
-  z-index: 0 !important;
-}
+  /* Pinned Tab - tabbrowser-arrowscrollbox overflowing */
+  #tabbrowser-tabs[positionpinnedtabs] > #tabbrowser-arrowscrollbox > .tabbrowser-tab[pinned] {
+    z-index: 0 !important;
+  }
 }
 
 /** Selected Tab - Bottom Rounded Corner **************************************/
 @supports -moz-bool-pref("userChrome.tab.original") {
-#tabbrowser-tabs {
-  --tab-corner-rounding: 3px; /* 10px looks about like chromium - 17px looks close to Australis tabs */
-  --tab-corner-padding: 0px;
-  --tab-corner-position: calc(var(--tab-corner-padding) - var(--tab-corner-rounding));
-}
+  #tabbrowser-tabs {
+    --tab-corner-rounding: 3px; /* 10px looks about like chromium - 17px looks close to Australis tabs */
+    --tab-corner-padding: 0px;
+    --tab-corner-position: calc(var(--tab-corner-padding) - var(--tab-corner-rounding));
+  }
 
-:root:not([customizing="true"]) tab[visuallyselected] > stack::before,
-:root:not([customizing="true"]) tab[visuallyselected] > stack::after {
-  content: "" !important;
+  :root:not([customizing="true"]) tab[visuallyselected] > stack::before,
+  :root:not([customizing="true"]) tab[visuallyselected] > stack::after {
+    content: "" !important;
 
-  /* Box */
-  display: block !important;
-  position: absolute !important;
-  z-index: 1 !important;
+    /* Box */
+    display: block !important;
+    position: absolute !important;
+    z-index: 1 !important;
 
-  /* Shape */
-  width: var(--tab-corner-rounding) !important;
-  height: 100% !important;
+    /* Shape */
+    width: var(--tab-corner-rounding) !important;
+    height: 100% !important;
 
-  /* Color */
-  fill: var(--toolbar-bgcolor) !important;
-  stroke: var(--tab-line-color, var(--tabs-border-color, rgba(128, 128, 142, 0.9))) !important;
-  -moz-context-properties: fill, stroke !important;
+    /* Color */
+    fill: var(--toolbar-bgcolor) !important;
+    stroke: var(--tab-line-color, var(--tabs-border-color, rgba(128, 128, 142, 0.9))) !important;
+    -moz-context-properties: fill, stroke !important;
 
-  /* Image */
-  background-size: var(--tab-corner-rounding);
-  background-repeat: no-repeat;
-  background-position-y: bottom;
-}
-:root:not([customizing="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::before,
-:root:not([customizing="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::after {
-  /* As Selected Tab - Box Shadow */
-  stroke: var(--toolbar-color) !important;
-}
+    /* Image */
+    background-size: var(--tab-corner-rounding);
+    background-repeat: no-repeat;
+    background-position-y: bottom;
+  }
+  :root:not([customizing="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::before,
+  :root:not([customizing="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::after {
+    /* As Selected Tab - Box Shadow */
+    stroke: var(--toolbar-color) !important;
+  }
 
-tab[visuallyselected] > stack::before {
-  left: var(--tab-corner-position) !important;
-  background-image: url("./icons/tab-bottom-corner-left.svg");
-}
-tab[visuallyselected] > stack::after {
-  left: auto;
-  right: var(--tab-corner-position);
-  background-image: url("./icons/tab-bottom-corner-right.svg");
-}
+  tab[visuallyselected] > stack::before {
+    left: var(--tab-corner-position) !important;
+    background-image: url("./icons/tab-bottom-corner-left.svg");
+  }
+  tab[visuallyselected] > stack::after {
+    left: auto;
+    right: var(--tab-corner-position);
+    background-image: url("./icons/tab-bottom-corner-right.svg");
+  }
 
-@media (-moz-gtk-csd-available) {
-  /* Fill color for GTK */
-  :root:not([customizing="true"]):not([lwtheme="true"]) tab[visuallyselected] > stack::before,
-  :root:not([customizing="true"]):not([lwtheme="true"]) tab[visuallyselected] > stack::after {
-    /* As GTK Toolbar's background-color + backround-image
+  @media (-moz-gtk-csd-available) {
+    /* Fill color for GTK */
+    :root:not([customizing="true"]):not([lwtheme="true"]) tab[visuallyselected] > stack::before,
+    :root:not([customizing="true"]):not([lwtheme="true"]) tab[visuallyselected] > stack::after {
+      /* As GTK Toolbar's background-color + backround-image
        * --toolbar-non-lwt-bgcolor: -moz-dialog;
        * --toolbar-non-lwt-bgimage: linear-gradient(rgba(255,255,255,.15), rgba(255,255,255,.15));
        */
-    fill: color-mix(in srgb, rgb(255, 255, 255) 15%, -moz-dialog) !important;
-    stroke: transparent !important;
+      fill: color-mix(in srgb, rgb(255, 255, 255) 15%, -moz-dialog) !important;
+      stroke: transparent !important;
+    }
+    :root:not([customizing="true"]):not([lwtheme="true"])
+      #TabsToolbar[brighttext]
+      tab[visuallyselected]
+      > stack::before,
+    :root:not([customizing="true"]):not([lwtheme="true"])
+      #TabsToolbar[brighttext]
+      tab[visuallyselected]
+      > stack::after {
+      stroke: transparent !important;
+    }
   }
-  :root:not([customizing="true"]):not([lwtheme="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::before,
-  :root:not([customizing="true"]):not([lwtheme="true"]) #TabsToolbar[brighttext] tab[visuallyselected] > stack::after {
-    stroke: transparent !important;
-  }
-}
 }
 
 /** Unselected Tab - Divide line **********************************************/
 @supports -moz-bool-pref("userChrome.tab.original") {
-#tabbrowser-arrowscrollbox {
-  position: absolute;
-}
+  #tabbrowser-arrowscrollbox {
+    position: absolute;
+  }
 }
 
 @supports -moz-bool-pref("userChrome.tab.original") {
-.tab-background::before,
-#tabs-newtab-button::before {
-  /* Box Model */
-  content: "";
-  display: block;
-  position: absolute;
+  .tab-background::before,
+  #tabs-newtab-button::before {
+    /* Box Model */
+    content: "";
+    display: block;
+    position: absolute;
 
-  /* Position */
-  top: 50%;
-  transform: translateX(-2.5px) translateY(calc(-50% + 1px));
+    /* Position */
+    top: 50%;
+    transform: translateX(-2.5px) translateY(calc(-50% + 1px));
 
-  /* Bar shape */
-  width: 1px;
-  height: 20px;
+    /* Bar shape */
+    width: 1px;
+    height: 20px;
 
-  /* Bar Color */
-  opacity: 0;
-  background-color: var(--toolbarseparator-color);
-}
+    /* Bar Color */
+    opacity: 0;
+    background-color: var(--toolbarseparator-color);
+  }
 }
 
 .tabbrowser-tab:not([visuallyselected], [multiselected], :hover, :first-child) .tab-background::before {
   opacity: var(--tab-separator-opacity);
 }
 @supports -moz-bool-pref("userChrome.tab.original") {
-#tabs-newtab-button:not(:hover, [open])::before {
-  opacity: var(--tab-separator-opacity);
-}
+  #tabs-newtab-button:not(:hover, [open])::before {
+    opacity: var(--tab-separator-opacity);
+  }
 }
 
 #navigator-toolbox:not([movingtab])
@@ -3338,19 +3344,19 @@ tab[visuallyselected] > stack::after {
   opacity: 0 !important;
 }
 @supports -moz-bool-pref("userChrome.tab.original") {
-#navigator-toolbox:not([movingtab])
-  .tabbrowser-tab:is([visuallyselected], [multiselected], :hover)
-  + .tabbrowser-tab
-  .tab-background::before,
-#navigator-toolbox:not([movingtab])
-  .tabbrowser-tab:is([visuallyselected], [multiselected], :hover)
-  ~ .tabbrowser-tab[afterhovered]
-  .tab-background::before,
-#navigator-toolbox:not([movingtab])
-  .tabbrowser-tab[last-visible-tab]:is([visuallyselected], [multiselected], :hover)
-  ~ #tabs-newtab-button::before {
-  opacity: 0 !important;
-}
+  #navigator-toolbox:not([movingtab])
+    .tabbrowser-tab:is([visuallyselected], [multiselected], :hover)
+    + .tabbrowser-tab
+    .tab-background::before,
+  #navigator-toolbox:not([movingtab])
+    .tabbrowser-tab:is([visuallyselected], [multiselected], :hover)
+    ~ .tabbrowser-tab[afterhovered]
+    .tab-background::before,
+  #navigator-toolbox:not([movingtab])
+    .tabbrowser-tab[last-visible-tab]:is([visuallyselected], [multiselected], :hover)
+    ~ #tabs-newtab-button::before {
+    opacity: 0 !important;
+  }
 }
 
 /* Animate */
@@ -3359,9 +3365,9 @@ tab[visuallyselected] > stack::after {
     transition: opacity 0.2s var(--animation-easing-function); /* cubic-bezier(.07, .95, 0, 1) */
   }
   @supports -moz-bool-pref("userChrome.tab.original") {
-  #tabs-newtab-button::before {
-    transition: opacity 0.2s var(--animation-easing-function); /* cubic-bezier(.07, .95, 0, 1) */
-  }
+    #tabs-newtab-button::before {
+      transition: opacity 0.2s var(--animation-easing-function); /* cubic-bezier(.07, .95, 0, 1) */
+    }
   }
 }
 
@@ -3372,68 +3378,68 @@ tab[visuallyselected] > stack::after {
 
 /* New tab button - Looks like tab ********************************************/
 @supports -moz-bool-pref("userChrome.tab.original") {
-#tabs-newtab-button {
-  /* Original:
+  #tabs-newtab-button {
+    /* Original:
     margin: 0 0 var(--tabs-navbar-shadow-size) !important
     => Can't ovrride style. Therefore, we should approach it by bypass.
     */
-  --tabs-navbar-shadow-size: -1px; /* Original: 1px */
-  --tabs-navbar-original-shadow-size: 1px;
-  --tab-corner-rounding: 4px; /* Hardcorded */
+    --tabs-navbar-shadow-size: -1px; /* Original: 1px */
+    --tabs-navbar-original-shadow-size: 1px;
+    --tab-corner-rounding: 4px; /* Hardcorded */
 
-  /* Size */
-  -moz-box-align: stretch !important;
-  padding-top: var(--tab-block-margin) !important;
+    /* Size */
+    -moz-box-align: stretch !important;
+    padding-top: var(--tab-block-margin) !important;
 
-  /* Corner Rounding Image */
-  --newtab-position: calc((var(--tab-corner-rounding) / 2) * -1);
-  background-image: url("./icons/tab-bottom-corner-left.svg"), url("./icons/tab-bottom-corner-right.svg");
-  background-repeat: no-repeat;
-  background-position: left var(--newtab-position) bottom var(--tabs-navbar-original-shadow-size),
-    right var(--newtab-position) bottom var(--tabs-navbar-original-shadow-size);
-  background-size: var(--tab-corner-rounding);
+    /* Corner Rounding Image */
+    --newtab-position: calc((var(--tab-corner-rounding) / 2) * -1);
+    background-image: url("./icons/tab-bottom-corner-left.svg"), url("./icons/tab-bottom-corner-right.svg");
+    background-repeat: no-repeat;
+    background-position: left var(--newtab-position) bottom var(--tabs-navbar-original-shadow-size),
+      right var(--newtab-position) bottom var(--tabs-navbar-original-shadow-size);
+    background-size: var(--tab-corner-rounding);
+
+    /* Corner Rounding Color */
+    fill: transparent !important;
+    -moz-context-properties: fill !important;
+  }
 
   /* Corner Rounding Color */
-  fill: transparent !important;
-  -moz-context-properties: fill !important;
-}
-
-/* Corner Rounding Color */
-#tabs-newtab-button:hover {
-  fill: var(--toolbarbutton-hover-background) !important;
-}
-#tabs-newtab-button:hover:active {
-  fill: var(--toolbarbutton-active-background) !important;
-}
-@media (-moz-windows-accent-color-in-titlebar) {
-  :root[tabsintitlebar]:not(:-moz-window-inactive, :-moz-lwtheme) #tabs-newtab-button:hover,
-  :root[tabsintitlebar][lwt-default-theme-in-dark-mode]:not(:-moz-window-inactive) #tabs-newtab-button:hover {
-    fill: color-mix(
-      in srgb,
-      -moz-accent-color-foreground 10%,
-      transparent
-    ) !important; /* Hardcorded for compatibility */
+  #tabs-newtab-button:hover {
+    fill: var(--toolbarbutton-hover-background) !important;
   }
-  :root[tabsintitlebar]:not(:-moz-window-inactive, :-moz-lwtheme) #tabs-newtab-button:hover:active,
-  :root[tabsintitlebar][lwt-default-theme-in-dark-mode]:not(:-moz-window-inactive) #tabs-newtab-button:hover:active {
-    fill: color-mix(
-      in srgb,
-      -moz-accent-color-foreground 15%,
-      transparent
-    ) !important; /* Hardcorded for compatibility */
+  #tabs-newtab-button:hover:active {
+    fill: var(--toolbarbutton-active-background) !important;
+  }
+  @media (-moz-windows-accent-color-in-titlebar) {
+    :root[tabsintitlebar]:not(:-moz-window-inactive, :-moz-lwtheme) #tabs-newtab-button:hover,
+    :root[tabsintitlebar][lwt-default-theme-in-dark-mode]:not(:-moz-window-inactive) #tabs-newtab-button:hover {
+      fill: color-mix(
+        in srgb,
+        -moz-accent-color-foreground 10%,
+        transparent
+      ) !important; /* Hardcorded for compatibility */
+    }
+    :root[tabsintitlebar]:not(:-moz-window-inactive, :-moz-lwtheme) #tabs-newtab-button:hover:active,
+    :root[tabsintitlebar][lwt-default-theme-in-dark-mode]:not(:-moz-window-inactive) #tabs-newtab-button:hover:active {
+      fill: color-mix(
+        in srgb,
+        -moz-accent-color-foreground 15%,
+        transparent
+      ) !important; /* Hardcorded for compatibility */
+    }
   }
-}
 
-/* '+'Icon */
-#tabs-newtab-button .toolbarbutton-icon {
-  border-radius: var(--tab-border-radius) var(--tab-border-radius) 0 0 !important; /* Original: var(--tab-border-radius) */
+  /* '+'Icon */
+  #tabs-newtab-button .toolbarbutton-icon {
+    border-radius: var(--tab-border-radius) var(--tab-border-radius) 0 0 !important; /* Original: var(--tab-border-radius) */
 
-  padding: calc(var(--toolbarbutton-inner-padding) - (var(--tab-block-margin) / 4)) var(--toolbarbutton-inner-padding)
-    calc(var(--toolbarbutton-inner-padding) + (var(--tab-block-margin) / 4) + var(--tabs-navbar-original-shadow-size)) !important;
-  -moz-context-properties: fill, fill-opacity;
-  fill: var(--toolbarbutton-icon-fill);
-  fill-opacity: var(--toolbarbutton-icon-fill-opacity);
-}
+    padding: calc(var(--toolbarbutton-inner-padding) - (var(--tab-block-margin) / 4)) var(--toolbarbutton-inner-padding)
+      calc(var(--toolbarbutton-inner-padding) + (var(--tab-block-margin) / 4) + var(--tabs-navbar-original-shadow-size)) !important;
+    -moz-context-properties: fill, fill-opacity;
+    fill: var(--toolbarbutton-icon-fill);
+    fill-opacity: var(--toolbarbutton-icon-fill-opacity);
+  }
 }
 
 /* Unloaded Tab - Contents Opacity ********************************************/