diff --git a/src/other/firefox/WhiteSur/parts/headerbar-urlbar.css b/src/other/firefox/WhiteSur/parts/headerbar-urlbar.css
index 20dd96f..85e493d 100644
--- a/src/other/firefox/WhiteSur/parts/headerbar-urlbar.css
+++ b/src/other/firefox/WhiteSur/parts/headerbar-urlbar.css
@@ -169,9 +169,15 @@ toolbarspring {
 
 #notification-popup-box {
 	height: 26px !important;
+	width: 28px !important;
+	padding: 5px !important;
 	border-radius: 5px !important;
 }
 
+.notification-anchor-icon {
+	padding: 0 !important;
+}
+
 .urlbar-page-action, #urlbar-go-button, .search-go-button,
 #tracking-protection-icon-container {
 	width: 28px !important;
diff --git a/src/other/firefox/WhiteSur/parts/tabsbar.css b/src/other/firefox/WhiteSur/parts/tabsbar.css
index 00d32b2..09702f0 100644
--- a/src/other/firefox/WhiteSur/parts/tabsbar.css
+++ b/src/other/firefox/WhiteSur/parts/tabsbar.css
@@ -64,7 +64,6 @@
 
 /* Tabs separators */
 .tabbrowser-tab {
-	border-width: 1px !important;
 	border-left: 1px solid transparent !important;
 }
 
@@ -73,11 +72,14 @@
 }
 
 .tabbrowser-tab[selected] + .tabbrowser-tab,
-.tabbrowser-tab:hover + .tabbrowser-tab,
-.tabbrowser-tab[first-tab] {
+.tabbrowser-tab:hover + .tabbrowser-tab {
 	border-color: transparent !important;
 }
 
+.tabbrowser-tab:first-of-type {
+	border-left: none !important;
+}
+
 /* Space between tabs */
 .tabbrowser-tab:not([pinned=true]) {
 	margin: 0 !important;
diff --git a/src/other/firefox/common/icons/persistent-storage.svg b/src/other/firefox/common/icons/persistent-storage.svg
new file mode 100644
index 0000000..126fb2a
--- /dev/null
+++ b/src/other/firefox/common/icons/persistent-storage.svg
@@ -0,0 +1,7 @@
+<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg">
+ <path d="m3 2c-1.662 0-3 1.338-3 3v6c0 1.662 1.338 3 3 3h10c1.662 0 3-1.338 3-3v-6c0-1.662-1.338-3-3-3h-10zm0 1h10c1.108 0 2 0.892 2 2v6c0 1.108-0.892 2-2 2h-10c-1.108 0-2-0.892-2-2v-6c0-1.108 0.892-2 2-2z" fill="#363636" fill-rule="evenodd" stop-color="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" style="paint-order:stroke fill markers"/>
+ <path d="m3 8c-1.662 0-3 1.338-3 3 0 1.662 1.338 3 3 3h10c1.662 0 3-1.338 3-3 0-1.662-1.338-3-3-3h-10zm0 1h10c1.108 0 2 0.892 2 2 0 1.108-0.892 2-2 2h-10c-1.108 0-2-0.892-2-2 0-1.108 0.892-2 2-2z" fill="#363636" fill-rule="evenodd" stop-color="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" style="paint-order:stroke fill markers"/>
+ <rect x="3" y="10" width="1" height="2" rx=".5" ry=".5" fill="#363636" fill-rule="evenodd" stop-color="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" style="paint-order:stroke fill markers"/>
+ <rect x="5" y="10" width="1" height="2" rx=".5" ry=".5" fill="#363636" fill-rule="evenodd" stop-color="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" style="paint-order:stroke fill markers"/>
+ <rect x="7" y="10" width="1" height="2" rx=".5" ry=".5" fill="#363636" fill-rule="evenodd" stop-color="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" style="paint-order:stroke fill markers"/>
+</svg>
diff --git a/src/other/firefox/common/parts/icons.css b/src/other/firefox/common/parts/icons.css
index d35b82b..d6e1c64 100644
--- a/src/other/firefox/common/parts/icons.css
+++ b/src/other/firefox/common/parts/icons.css
@@ -436,6 +436,10 @@ menu[disabled] > .menu-right {
 	list-style-image: url("../icons/picture-in-picture-open.svg") !important;
 }
 
+.persistent-storage-icon {
+	list-style-image: url("../icons/persistent-storage.svg") !important;
+}
+
 #permissions-granted-icon {
 	list-style-image: url("../icons/permissions-granted.svg") !important;
 }
@@ -709,6 +713,7 @@ treechildren::-moz-tree-image {
 	#tracking-protection-icon-animatable-image,
 	#reader-mode-button > .urlbar-icon,
 	#picture-in-picture-button > .urlbar-icon,
+	.persistent-storage-icon,
 	#star-button:not([starred]),
 	#context-bookmarkpage:not([starred]) .menu-iconic-icon,
 	#geo-sharing-icon[sharing], .geo-icon,