set icon labels to only display at less than 768px wide
changed menu width to max-width 840px
on mobile remove header icon, reduce size of h2
wrap sub-headers in paragraph tags instead of divs
Merge branch 'responsivetable' into gh-pages

* responsivetable:
  wrap sub-headers in paragraph tags instead of divs
  on mobile remove header icon, reduce size of h2
  changed menu width to max-width 840px
  set icon labels to only display at less than 768px wide