diff --git a/app/ui/default_style.css b/app/ui/default_style.css
index ccb25934..e96caa21 100644
--- a/app/ui/default_style.css
+++ b/app/ui/default_style.css
@@ -31,4 +31,10 @@ infobar {
 switch slider {
   min-height: 1.5em;
   min-width: 1.5em;
-}
\ No newline at end of file
+}
+
+paned > separator {
+  background-repeat: no-repeat;
+  background-position: center;
+  background-size: 1px 24px;
+}