Sort header classes to prevent unneeded changes
Add hover on post div to brighten overlay
Apply transition to hover css
Respond to linting
Use colors.scss instead of hex values
Decrease specificity
Use new .overlay class
Rename headers scss
Enable sourcemaps
Replace width and height with size mixin
Replace another width + height with size mixin
Replace grid percentages with percentage function
Use hidpi mixin
Moved size mixin in media query to override span-columns
Use h2 in header instead of p
Replace media mixin with breakpoint
Replace hidpi mixin with breakpoint($small)
Center post background
Fix scss linter errors