I work on a SEO-dependent content website, and we are in the process of making our site adaptive/responsive. More technically, we are using CSS media queries to apply different CSS styles as the size of the browser changes.
As the browser size shrinks to 320x480 and below (mobile), we use CSS to hide much of the content on the page - up to 75% of it.
My question is - would Googlebot consider this practice keyword stuffing? My worry is that Googlebot may think we are stuffing the page with keywords to make the page relevant, but then hiding the keywords with CSS.