diff --git a/Backend/mocked-services/src/main/resources/static/css/r11addons.css b/Backend/mocked-services/src/main/resources/static/css/r11addons.css
index d6310e6..a7e4f86 100644
--- a/Backend/mocked-services/src/main/resources/static/css/r11addons.css
+++ b/Backend/mocked-services/src/main/resources/static/css/r11addons.css
@@ -26,6 +26,7 @@
     background: #D5D7E6;
     margin-bottom: 10px;
     cursor: default;
+    border-bottom: 1px solid darkgray;
 }
 
 .tile:hover {