Bravo to the responsive web design feature in v12! I have two suggestions:

1. It would be good to be able to change the size of the hamburger button. It's currently too small to see and click on. 

2. It would be great if texts can be added on top of an image. Currently, it is only possible to do that on "Template Customization" for header and footer but not on page content. Perhaps, you can create a new feature for image cell with the ability to add custom text as the top layer?