Fix Safari issue with display: flex

Author: Gaurav0

app/styles/app.scss

@@ -200,9 +200,11 @@ body {
   margin: 0;
   margin-left: 0;
   z-index: -1;
+  display: -webkit-flex;
   display: flex;
 
   .col-md-4 {
+    -webkit-flex-grow: 1;
     flex-grow: 1;
     padding: 0;
     height: 100%;