diff --git a/web_assets/overviewer.css b/web_assets/overviewer.css
index 14585e6..4bce661 100644
--- a/web_assets/overviewer.css
+++ b/web_assets/overviewer.css
@@ -32,16 +32,21 @@ body {
 .customControl {
     padding: 5px;
     height: 15px;
+    color: black;
     font-family: Arial, sans-serif;
 }
 
 .customControl > div.top {
-    background-color: #fff;
-    border: 2px solid #000;
-    text-align: center;
-    width: 70px;
     font-size: 12px;
-    width: 70px;
+    line-height: 160%;
+    text-align: center;
+    padding: 0px 6px;
+    
+    background-color: white;
+    
+    border: 1px solid #A9BBDF;
+    border-radius: 2px 2px;
+    box-shadow: rgba(0, 0, 0, 0.347656) 2px 2px 3px;
     cursor: pointer;
 }