I'm looking at making some SEO optimisation fixes, and at this point I'm sorting out the heading structure and keywords - H1's, H2's etc
We have a site where there are a number of similar blocks, and one is always visible, and one is hidden depending on the screen size. This is our method of making a single site responsive.
Firstly, how does this technique affect the SEO, and in general does the responsive side of a site matter at all to search engines? What I mean by this is if the site has different content depending on screen sizes, then which content would the search spider crawl?