.modal
  margin: 10px auto
  width: 500px
  background-color: #fff
  padding: 1em

.overlay
  height: 100%
  width: 100%
  position: fixed
  top: 0
  left: 0
  background-color: rgba(0, 0, 0, 0.2)

.flush--top
  margin-top: 0