Fix company banner issue for iOS

Author: phated

src/theme/CompanyBanner/banner.module.scss

@@ -24,7 +24,7 @@
   padding: 0;
   margin: 0;
 
-  flex: 1 1 0;
+  flex-grow: 1;
   display: flex;
   justify-content: space-around;
   align-items: center;