diff --git a/web/gui/src/main/webapp/app/view/port/port.css b/web/gui/src/main/webapp/app/view/port/port.css
index dd4b878..44c0abe 100644
--- a/web/gui/src/main/webapp/app/view/port/port.css
+++ b/web/gui/src/main/webapp/app/view/port/port.css
@@ -28,10 +28,20 @@
 #ov-port td {
     text-align: center;
 }
+
 #ov-port td.right {
     text-align: right;
 }
 
+#ov-port td.delta {
+    text-align: right;
+    font-weight: bold;
+}
+
+#ov-port td.delta:before {
+    content: "+";
+}
+
 #ov-port tr.no-data td {
     text-align: center;
 }