.q-knob

  font-size 48px

  &--editable
    cursor pointer
    outline 0

    &:before
      content ''
      position absolute
      top 0
      right 0
      bottom 0
      left 0
      border-radius 50%
      box-shadow none
      transition box-shadow .24s ease-in-out

    &:focus:before
      box-shadow $shadow-4