diff --git a/ivette/src/dome/renderer/frame/style.css b/ivette/src/dome/renderer/frame/style.css
index d610e3bd003db02acbdc919c1dd7603a560a3ead..dc072afdec31275668f8363b9b519a15b5125237 100644
--- a/ivette/src/dome/renderer/frame/style.css
+++ b/ivette/src/dome/renderer/frame/style.css
@@ -410,11 +410,11 @@
 }
 
 .dome-xToolBar-group .dome-xToolBar-control:not(:first-child) {
-    border-left: 0 ;
+    border-left: 1px solid transparent;
 }
 
 .dome-xToolBar-group .dome-xToolBar-control:not(:last-child) {
-    border-right: 0 ;
+    border-right: 1px solid transparent;
 }
 
 .dome-xToolBar-group .dome-xToolBar-control:not(:disabled):not(:last-child) {