diff --git a/spectrum_manager/src/html/style.css b/spectrum_manager/src/html/style.css
index 5b66f6582039638cd5147767cb2a5af35819b1c2..5d42bdb4708f94ce68d8fe59b24fc2494abcc6eb 100644
--- a/spectrum_manager/src/html/style.css
+++ b/spectrum_manager/src/html/style.css
@@ -463,3 +463,14 @@ Small Device Styles
   }
 
 }
+
+.largeWidth {
+	margin: 0 auto;
+	width: 90%;
+}
+
+.maxHeight {
+    max-height: 500px;
+    overflow-y: auto;
+}
+