diff --git a/author/project/system/public/themes/default/css/main.css b/author/project/system/public/themes/default/css/main.css
index d9cb3e3..f1b3243 100755
--- a/author/project/system/public/themes/default/css/main.css
+++ b/author/project/system/public/themes/default/css/main.css
@@ -5,6 +5,7 @@ body {
 }
 
 main {
+	flex-grow: 1;
 	display: flex;
 	flex-direction: column;
 	align-items: center;