I noticed there is a problem in Firefox with responsive images since C5 prints image width and height automatically, or at least i think this is what causes images not to resize in Firefox. With Chrome it works fine. What would be the best way to prevent C5 adding width and height and to add class="img-responsive" (now i've done it just by adding it manually to sourcecode)?
There must other issues?
Do you have a URL we can look at?
Like i said works fine with Chrome but not with Firefox. :S
Use divs or adjust css to cope with tables!