Thanks Josh. I am not using responsive templates. Didn't know they were out as yet.
However I was just trying to make a "mobile-aware" template in marketo, about 550 pixels wide, with large form fields and large submit button. This would display nicely in 320-pixel viewpane but also look good in desktop.
It works in like, every other landing page application there is (Exacttarget, Silverpop etc), except in marketo. In marketo, trying to create such a page results in the mobile display shrinking it wayyyyy down, as though there were a controlling background page forcing the overall scree size to be large compared with the 550 pixel-width rich text and form.
So, is there ANY WAY to make the display auto-fill to the 320 width, without having to use the responsive templates???
Thanks all.