Good points. I probably should have been clear that the one column thing was just an example. I agree that there is certainly more to responsive design than th

Good points. I probably should have been clear that the one column thing was just an example. I agree that there is certainly more to responsive design than that, else it would be much easier! But, what you mentioned with regard to being more thoughtful about the design and distilling it to its minimalistic essence is partly where I was going, except to a different conclusion. That is, if such a clean, focused design can be achieved, then what results is a Web app that could likely work well across devices. But, if that minimalistic design leaves much to be desired on the desktop (i.e. a remarkably better experience can be delivered because of the additional available real estate, well then we are likely talking about a fundamentally different design. In that case, I say build it out separately vs. trying to have each page, CSS, etc. pull double-duty. >Developing a minimalistic version of my Web app in the beginning helped me to focus [...] it's a useful aspect of responsive design Good point. But, I think that's more a side effect of mobile-first than responsive design.