html: deprecate ie < 10 and provide firefox link
move cat and tags to home-like title style
tweak primary color, enhance disabled pagination a11y
sass: remove masthead nav hover effects
scrollbar: transparent background
remove ie hacks and compats
scrollbar tweaks for gecko
other browsers only have vendor prefixed version, not interested in them
sass: remove most moz-ism
-moz-focus-inner still here as it seems needed
sass: purge webkit-ism
it is 2020 and a blog for hackers should not use vendor prefix
sass: remove opera-ism
real opera has dead so long
sass: remove ms-ism
we don't support ie/trident-edge starting from removing smooth-scroll.js