diff --git a/src/other/firefox/README.md b/src/other/firefox/README.md
index 9f732a6..3f6eef1 100644
--- a/src/other/firefox/README.md
+++ b/src/other/firefox/README.md
@@ -1,15 +1,14 @@
 
-## Firefox Mojave theme
+## Firefox WhiteSur theme
 
-<p align="center">A MacOSX Mojave theme for Firefox 60+</p>
+<p align="center">A MacOS Big Sur theme for Firefox 70+</p>
 
 #### Preview
-![01](https://github.com/vinceliuice/Mojave-gtk-theme/blob/images/firefox01.png?raw=true)
-![02](https://github.com/vinceliuice/Mojave-gtk-theme/blob/images/firefox02.png?raw=true)
+![Preview](preview.png?raw=true)
 
 ## Description
 
-This is a bunch of CSS code to make Firefox look closer to Mac Mojave theme.
+This is a bunch of CSS code to make Firefox look closer to MacOS Big Sur theme.
 Based on https://github.com/rafaelmardojai/firefox-gnome-theme
 
 ## Installation
diff --git a/src/other/firefox/chrome/WhiteSur/icons/permissions-granted.svg b/src/other/firefox/chrome/WhiteSur/icons/permissions-granted.svg
new file mode 100644
index 0000000..a6b3b15
--- /dev/null
+++ b/src/other/firefox/chrome/WhiteSur/icons/permissions-granted.svg
@@ -0,0 +1,8 @@
+<svg width="16" height="16" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <g fill="#333">
+  <path d="m1.5 4c-0.277 0-0.5 0.223-0.5 0.5s0.223 0.5 0.5 0.5h2.5879a1.5 1.5 0 0 1-0.087891-0.5 1.5 1.5 0 0 1 0.085938-0.5h-2.5859zm5.4121 0a1.5 1.5 0 0 1 0.087891 0.5 1.5 1.5 0 0 1-0.085938 0.5h7.5859c0.277 0 0.5-0.223 0.5-0.5s-0.223-0.5-0.5-0.5h-7.5879z" stroke-linecap="round" stroke-linejoin="round" stroke-width="2.3664"/>
+  <path d="m1.5 11c-0.277 0-0.5 0.223-0.5 0.5s0.223 0.5 0.5 0.5h7.5879a1.5 1.5 0 0 1-0.087891-0.5 1.5 1.5 0 0 1 0.085938-0.5h-7.5859zm10.412 0a1.5 1.5 0 0 1 0.087891 0.5 1.5 1.5 0 0 1-0.085938 0.5h2.5859c0.277 0 0.5-0.223 0.5-0.5s-0.223-0.5-0.5-0.5h-2.5879z" stroke-linecap="round" stroke-linejoin="round" stroke-width="2.3664"/>
+  <path d="m5.5 2a2.5 2.5 0 0 0-2.5 2.5 2.5 2.5 0 0 0 2.5 2.5 2.5 2.5 0 0 0 2.5-2.5 2.5 2.5 0 0 0-2.5-2.5zm0 1a1.5 1.5 0 0 1 1.5 1.5 1.5 1.5 0 0 1-1.5 1.5 1.5 1.5 0 0 1-1.5-1.5 1.5 1.5 0 0 1 1.5-1.5z" stroke-linecap="square" stroke-width="2"/>
+  <path d="m10.5 9a2.5 2.5 0 0 0-2.5 2.5 2.5 2.5 0 0 0 2.5 2.5 2.5 2.5 0 0 0 2.5-2.5 2.5 2.5 0 0 0-2.5-2.5zm0 1a1.5 1.5 0 0 1 1.5 1.5 1.5 1.5 0 0 1-1.5 1.5 1.5 1.5 0 0 1-1.5-1.5 1.5 1.5 0 0 1 1.5-1.5z" stroke-linecap="square" stroke-width="2"/>
+ </g>
+</svg>
diff --git a/src/other/firefox/chrome/WhiteSur/icons/reader-mode.svg b/src/other/firefox/chrome/WhiteSur/icons/reader-mode.svg
new file mode 100644
index 0000000..94931d2
--- /dev/null
+++ b/src/other/firefox/chrome/WhiteSur/icons/reader-mode.svg
@@ -0,0 +1,13 @@
+<svg width="4.2333mm" height="4.2333mm" version="1.1" viewBox="0 0 4.2333 4.2333" xmlns="http://www.w3.org/2000/svg">
+ <g fill="#333">
+  <path d="m0.52917 0.79375c0-0.29316 0.23601-0.52917 0.52917-0.52917h2.1166c0.29316 0 0.52917 0.23601 0.52917 0.52917v2.6458c0 0.29316-0.23601 0.52917-0.52917 0.52917h-2.1166c-0.29316 0-0.52917-0.23601-0.52917-0.52917zm0.26458 0v2.6458c0 0.14658 0.118 0.26458 0.26458 0.26458h2.1166c0.14658 0 0.26458-0.118 0.26458-0.26458v-2.6458c0-0.14658-0.118-0.26458-0.26458-0.26458h-2.1166c-0.14658 0-0.26458 0.118-0.26458 0.26458z" color="#363636" stroke-width=".26458"/>
+  <g stroke-linecap="square">
+   <g stroke-width=".48991">
+    <rect x="1.3229" y="1.0583" width="1.5875" height=".26458" ry=".13229"/>
+    <rect x="1.3229" y="1.5875" width="1.5875" height=".26458" ry=".13229"/>
+    <rect x="1.3229" y="2.1167" width="1.5875" height=".26458" ry=".13229"/>
+   </g>
+   <rect x="1.3229" y="2.6458" width=".90714" height=".26458" ry=".13229" stroke-width=".37034"/>
+  </g>
+ </g>
+</svg>
diff --git a/src/other/firefox/chrome/WhiteSur/parts/icons.css b/src/other/firefox/chrome/WhiteSur/parts/icons.css
index be564ec..108844f 100644
--- a/src/other/firefox/chrome/WhiteSur/parts/icons.css
+++ b/src/other/firefox/chrome/WhiteSur/parts/icons.css
@@ -279,45 +279,53 @@ menuitem[type="radio"]:not([disabled="true"]):hover .menu-iconic-icon {
 }
 
 #tracking-protection-icon {
-    list-style-image: url("../icons/tracking-protection.svg") !important;
+	list-style-image: url("../icons/tracking-protection.svg") !important;
 }
 
 #identity-icon {
-    list-style-image: url("../icons/folder-locked-symbolic.svg") !important;
+	list-style-image: url("../icons/folder-locked-symbolic.svg") !important;
 }
 
 #pageActionButton, .share-more-button {
-    list-style-image: url("../icons/page-action.svg") !important;
+	list-style-image: url("../icons/page-action.svg") !important;
 }
 
 #pocket-button, #pageAction-panel-pocket {
-    list-style-image: url("../icons/save-to-pocket.svg") !important;
+	list-style-image: url("../icons/save-to-pocket.svg") !important;
 }
 
 #star-button {
-    list-style-image: url("../icons/star-symbolic.svg") !important;
+	list-style-image: url("../icons/star-symbolic.svg") !important;
 }
 
 #star-button[starred] {
-    list-style-image: url("../icons/starred-symbolic.svg") !important;
+	list-style-image: url("../icons/starred-symbolic.svg") !important;
 }
 
 #plugins-notification-icon:not(.plugin-blocked)[extraAttr="inactive"] > .plugin-icon {
-    fill-opacity: 0.25;
-    list-style-image: url("../icons/application-x-addon-symbolic.svg") !important;
+	fill-opacity: 0.25;
+	list-style-image: url("../icons/application-x-addon-symbolic.svg") !important;
 }
 
 #plugins-notification-icon:not(.plugin-blocked)[extraAttr="active"] > .plugin-icon {
-    fill-opacity: 1;
-    list-style-image: url("../icons/application-x-addon-symbolic.svg") !important;
+	fill-opacity: 1;
+	list-style-image: url("../icons/application-x-addon-symbolic.svg") !important;
 }
 
 /* #plugin-icon-badge {
     list-style-image: url("../icons/application-x-addon-symbolic.svg") !important;
 } */
 
+#reader-mode-button {
+	list-style-image: url("../icons/reader-mode.svg") !important;
+}
+
+#permissions-granted-icon {
+	list-style-image: url("../icons/permissions-granted.svg") !important;
+}
+
 .bookmark-item[container] {
-    list-style-image: url("../icons/folder-symbolic.svg") !important;
+	list-style-image: url("../icons/folder-symbolic.svg") !important;
 }
 
 /* Invert icons color in dark variant */
diff --git a/src/other/firefox/preview.png b/src/other/firefox/preview.png
new file mode 100644
index 0000000..47239f2
Binary files /dev/null and b/src/other/firefox/preview.png differ