diff --git a/static/style.css b/static/style.css
index a44c886..dd12f00 100644
--- a/static/style.css
+++ b/static/style.css
@@ -11,3 +11,7 @@ body {
   border: #CCC 1px solid;
   border-radius: 0.2em;
 }
+
+.blue-background-class {
+  background: #CDF;
+}