diff --git a/de/home/.librewolf/config/chrome/sidebery.css b/de/home/.librewolf/config/chrome/sidebery.css
index 7ce78db..47bcb38 100644
--- a/de/home/.librewolf/config/chrome/sidebery.css
+++ b/de/home/.librewolf/config/chrome/sidebery.css
@@ -13,6 +13,7 @@
     --nav-btn-width: 30px !important;
     --nav-btn-height: 28px !important;
     --active-el-bg: [[[COLORHEX]]] !important;
+    --tabs-border-radius: 8px !important;
 
     @media -moz-pref( "browser.tabs.allow_transparent_browser") and (not (-moz-platform: windows)) {
 /*      background-color: [[[COLORHEX]]] !important;*/
diff --git a/de/home/.librewolf/development/chrome/sidebery.css b/de/home/.librewolf/development/chrome/sidebery.css
index cfa94fd..a06d7d3 100644
--- a/de/home/.librewolf/development/chrome/sidebery.css
+++ b/de/home/.librewolf/development/chrome/sidebery.css
@@ -13,6 +13,7 @@
     --nav-btn-width: 30px !important;
     --nav-btn-height: 28px !important;
     --active-el-bg: #795f7c7f !important;
+    --tabs-border-radius: 8px !important;
 
     @media -moz-pref( "browser.tabs.allow_transparent_browser") and (not (-moz-platform: windows)) {
 /*      background-color: #795f7c7f !important;*/
diff --git a/de/home/.librewolf/development/chrome/userChrome.css b/de/home/.librewolf/development/chrome/userChrome.css
index 315e655..d463f1e 100644
--- a/de/home/.librewolf/development/chrome/userChrome.css
+++ b/de/home/.librewolf/development/chrome/userChrome.css
@@ -23,6 +23,7 @@
 #tabbrowser-tabpanels {
   margin: 10px !important;
   margin-left: 10px !important;
+  background-color: red !important;
   border-radius: 12px !important;
   * { border-radius: 12px !important; }
 }