usr `$*-width` instead of `$safe-for-*`
use magic number for calculating breakpoints

Magic \(^o^)/ Number
decrease "Global Nav~" font size on small screen
fix `seven-circles.svg` and rebuild its Data URI
work around "Social Buttons" layout bug
fix "Posts" items' whitespace
add `$constant` variable and use it
adjust font size at every `3px`
remove IE10 active link background color
add normalization styles for IE10
version 6.36