Full-width view or apply custom CSS

There is a max-width on 1440px on the CSS class .app-view. It limits the view in Podio which is not neccessary on big screens and create challenges in the workflow. Please make a solution to add full-width in the view or at least for users to add custom CSS?

I know that there is hundreds of old posts regarding this issue of adding custom CSS but I still need to know why you havn't done anything about it yet?

Best regards Mikkel Andersen