`px` => `em` in homepage + chapters (including logo), potions, and blackboard
`px` => `em` in overflow ellipsis potion
`px` => `em` in table style potion
`px` => `em` in three pane app
Refactor three pane app with color to use three pane app (duh!)
`text-rendering: optimizeLegibility` all of the things!