diff --git a/css/basic.css b/css/basic.css
index 4a80ca8..db745c4 100644
--- a/css/basic.css
+++ b/css/basic.css
@@ -17,4 +17,8 @@
 #inner-container {
 	background-color: rgba(255,255,255, 0.8);
 	padding: 5%;
-}
\ No newline at end of file
+}
+
+.hidden {
+	display: none;
+}