diff --git a/lib/static/css/main.css b/lib/static/css/main.css
index e9c069a9db..3fbe2e6a23 100644
--- a/lib/static/css/main.css
+++ b/lib/static/css/main.css
@@ -181,6 +181,7 @@ header h2 {
 
 .mainContainer {
   background: #f9f9f9;
+  flex: 1;
 }
 .mainContainer .wrapper {
   text-align: left;