diff --git a/css/index.css b/css/index.css
index 09802d78..529608fc 100644
--- a/css/index.css
+++ b/css/index.css
@@ -92,7 +92,10 @@ a:before {
 {
     position:relative;
 }
-
+#tree-and-controls:hover{
+    border-color: #606060;
+    border-width: 2px;
+}
 #tree-controls{
     position: absolute ;
     right:0px;