* feat(dark mode): set up first set of colors
* feat(dark mode): define state colours
* 🧹
* feat(dark mode): variablify all teh wordz
* feat(dark mode): set colors on body
* feat(dark mode): replace hard coded color value
* feat(dark mode): 🌑
* feat(a11y): update link focus styles
- restores visible focus in windows high contrast mode
- increases visibility in boxes with bg colour
* feat(dark mode): enable postcss
* 💅
* feat(dark mode): add user control
* chore: use generic headline name
* feat(dark mode): hide switch until script loads
* feat(dark mode): increase link contrast
* add content warning to footer nav partial
* feat(dark mode): replace hard coded colour value in alertbox
* feat(dark mode): tone down text colour
* feat(dark mode): properly invert code elements
* 🧹 move box styles into own partial
* feat(dark mode): use darker colour as background for links
