Refine Skills Section

Making the css a little more portable where it makes sense to, moved
tools over the codeBlur section.
Added click to show for skillCards

Further refining skills section to shorten overall site on mobile.
Added flex support for old browsers

Also redid the nav bar highlighting
Removing flex

Unfortunately flex was not working even a little bit on safari, and
since I can do most of the same things fairly easily and this site is
static anyway, removing.  Slide 1 works across everything, slide 2
almost there.
Removed <main>,<section> elements

Going on a browser support tangent, but it's worth it.
Entire layout working on all major browsers

Going through breakpoints real quick and then testing full page on
mobile.
Responsive, mobile support works

Mission do-anything-but-actually-make-blog complete.  Now I can start
mission blog...