diff --git a/Paper/gtk-3.0/widgets/notebook.css b/Paper/gtk-3.0/widgets/notebook.css
index 1ed403d..b324cfa 100644
--- a/Paper/gtk-3.0/widgets/notebook.css
+++ b/Paper/gtk-3.0/widgets/notebook.css
@@ -255,31 +255,35 @@
 }
 
 .notebook.header.frame.top,
-.notebook.header.frame.top:backdrop {
+.notebook.header.frame.top:backdrop {/*
     border-top: 1px solid @border;
     border-left: 1px solid @border;
-    border-right: 1px solid @border;
+    border-right: 1px solid @border;*/
+    border:none;
 }
 
 .notebook.header.frame.bottom,
 .notebook.header.frame.bottom:backdrop {
-    border-bottom: 1px solid @border;
+    /*border-bottom: 1px solid @border;
     border-left: 1px solid @border;
-    border-right: 1px solid @border;
+    border-right: 1px solid @border;*/
+    border:none;
 }
 
 .notebook.header.frame.left,
 .notebook.header.frame.left:backdrop {
-    border-top: 1px solid @border;
+    /*border-top: 1px solid @border;
     border-bottom: 1px solid @border;
-    border-left: 1px solid @border;
+    border-left: 1px solid @border;*/    
+    border:none;
 }
 
 .notebook.header.frame.right,
 .notebook.header.frame.right:backdrop {
-    border-top: 1px solid @border;
+    /*border-top: 1px solid @border;
     border-bottom: 1px solid @border;
-    border-right: 1px solid @border;
+    border-right: 1px solid @border;*/    
+    border:none;
 }
 
 /*----- Labels -----*/