working through some of the responsive issues...removing extra space from the header and moving left nav to bottom of narrow screens
for screens less than 768px wide, changing the split column on the topics page to single column, also adding some margin on content id to prevent text from being hidden by header
attempting to fix the responsive issues in which the btn-navbar was taking up too much vertical space on narrower screen views, also the issue in which there was too large a gap before the left nav controls on narrow screen views