diff --git a/firefox/treestyletab.css b/firefox/treestyletab.css
index d4a8aec..a68fb0b 100644
--- a/firefox/treestyletab.css
+++ b/firefox/treestyletab.css
@@ -7,6 +7,9 @@
 .newtab-button {
   display: none;
 }
+.newtab-button::after {
+  display: none;
+}
 
 /* Counter tunning */
 .counter {
@@ -29,7 +32,7 @@
 
 /* Common background */
 #background {
-  background: color-mix(in srgb, -moz-dialog 85%, white);
+  background: -moz-dialog;
 }
 
 /* Pined tabs container */
@@ -58,7 +61,7 @@ tab-item-substance {
 
 .tab:hover > tab-item-substance,
 .tab.active > tab-item-substance {
-  background: var(--face-highlight-more-more-lighter);
+  background: var(--face-highlight-more-lighter);
 }
 
 .tab .label {
diff --git a/firefox/userChrome.css b/firefox/userChrome.css
index 450112c..a73e44e 100644
--- a/firefox/userChrome.css
+++ b/firefox/userChrome.css
@@ -10,7 +10,7 @@
 }
 
 #main-window:not([tabsintitlebar="true"]) #TabsToolbar {
-    visibility: collapse !important;
+  visibility: collapse !important;
 }
 
 #sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
@@ -19,13 +19,16 @@
 
 /* Addressbar */
 
+#nav-bar.browser-toolbar {
+  background-color: -moz-dialog !important;
+}
+
 #nav-bar-customization-target {
   --toolbar-start-end-padding: 0;
 }
 
 #main-window:not([privatebrowsingmode="temporary"]) #urlbar-background {
-  /* --toolbar-field-border-color: #adadad; */
-  border-color: var(--button-active-bgcolor) !important;
+  border-color: ThreeDShadow !important;
   background-color: Field !important;
 }