#cta
  margin: 30px 0
  text-align: center

  +large
    margin: 50px 0

  a
    +border-radius(3px)
    +box-shadow(#666 2px 2px 0)
    +single-transition(background-color, 250ms)
    +single-transition(box-shadow, 250ms)
    background: #c1272d
    color: #fff
    display: inline-block
    padding: 1em

    +small
      padding: .5em

    &:hover
      +box-shadow(#333 2px 2px 0)
      background: #666

    &:active
      +box-shadow(none)
      margin: 3px 0 0 3px