masthead: cleanup another div

masthead: remove inner wrap

fix greedy nav border

simplify css by border-color instead of border-*-color

move most colors to a individual file

remove config yaml alignment spaces

rework jekyll include/exclude

rm gitattribute used by github

replace README for blog

fix copyright year

add license info

remove follow word in footer

unset .highlight .gh bg on light

fix pager color

grid: overflow: hidden

fix footer color

fix footer

light: tweak footer

light theme color tweaks

tweak light footer color