switch.sass

=switch-default($color: $primary-color)
  display: inline-block
  vertical-align: middle

  input[type="checkbox"]
    position: absolute
    margin-left: -9999px
    visibility: hidden
      
    + label
      display: block
      position: relative
      cursor: pointer
      user-select: none
      padding: 2px
      width: 40px
      height: 20px
      background: map-get($white, darker)
      border-radius: 60px
      transition: background 0.4s

      &:before, &:after
        display: block
        position: absolute
        content: " "

      &:before
        top: 2px
        left: 2px
        bottom: 2px
        right: 2px
        background-color: white
        border-radius: 60px
        transition: background 0.4s

      &:after
        top: 4px
        left: 4px
        bottom: 4px
        width: 12px
        background-color: map-get($white, darker)
        border-radius: 52px
        transition: margin 0.4s, background 0.4s

    &:checked + label
      background-color: $color

      &:after
        margin-left: 20px
        background-color: $color