Is Runway a standalone framework in it’s own right, or is it based on Zurb’s Foundation or Twitter’s Bootstrap? I only ask as I’ve been playing with Foundation and would be really interested in this if it happens to be based on it – i.e. I don’t want to go through the learning curve on another framework just yet until I’ve got the other one fixed in my mind!
We don’t have an HTML only version of the Incentive theme.
To create the responsive functionality in our themes we use a variation of the Bootstrap CSS. We do this because Bootstrap includes a lot of additional styles for buttons, inputs, text and much more that we feel it’s easier to style ourselves from the defaults than to add extra CSS to “undo” the styling we may not want. For example, we might make a design with square corners on the buttons, but Bootstrap added rounding to buttons automatically. Now we must write extra styles just to remove the Bootstrap added styles we don’t need, creating unnecessary bloat in the style sheets.
The responsive functionality can be added using any framework you need. It’s pretty easy to start a theme from Bootstrap with Runway if that’s what you’re wanting to do.