Out of all the responsive building tools I find that this is the easiest to work with (in terms of creating the site structure). There are a few features, however, that would be good additions:
- Ability to add styles to standard tags and IDs. Right now I must have a class on the item I want to style, so I can't target, say, "header h1" or "#my_nav"
- Ability to hand edit the html and css.
Item 2 is no easy task - I don't see how you can allow it without breaking the gui or at least the gui needs to understand what's happening and deal with the user's custom code.
Right now I am using it to build out my structure, then I need to export the code for further editing.