message: Tweaks to badge appearance
diff: display inline-block
  padding 0.2em 0.4em
  line-height 1
  - border-radius 0.15em
  + border-radius 0.1em
  background-color colors-gray-lighter
  color white
  font-weight bold
  &--alert
  background-color colors-state-alert
  +
  + // Sort of specific padding to how `font-size-mobile` renders
  + // when it's specified as 13px
  + +mobile()
  + padding 0.3em 0.4em 0.2em 0.4em
  