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                <div class="modal">
  <button>Click Here to open the Modal</button>
  <input type="radio" class="open" name="modal-controller-1"/>
  <div class="pop-up">
    <input type="radio" class="close" name="modal-controller-1" checked /><i></i>
    <h1>Here's our modal!</h1>
    <p>You can place any markup in here or change the css of <code>.pop-up</code> to customize your modal. Just make sure you leave <code>position</code> set to <code>fixed</code>.</p>
    <p>Make the default styling of <code>.pop-up</code> the model's closed state and make your adjustments for the "open" state inside of <code>.open:checked + .pop-up</code>.</p>


                @import compass

$main: rgba( 250, 253, 255, 1 )
$accent: rgba( 255, 80, 90, 1 )
$dark: rgba( 56,67,89,1 )

html , body
  background-color: shade( $main , 2% )
  text-align: center
  position: absolute
  overflow: hidden
  height: 100%
  width: 100%
    font-family: sans-serif
    color: $dark
    font-weight: 100
    letter-spacing: 0.03em
  display: inline-block
  position: relative
  margin-top: -39px
  top: 50%
  .open , .close
    outline: none
    opacity: 0
    -webkit-appearance: none
    -moz-appearance: none
    appearance: none
    outline: none
    border: none
    position: relative
    padding: 15px
    margin: 15px
    background-color: $dark
    color: $main
    z-index: 1
    position: absolute
    cursor: pointer
    top: 0
    left: 0
    width: 100%
    height: 100%
    z-index: 2
    &:checked + .pop-up
      @include transform( translate( -50% , -50% ) scale( 1 ))
      opacity: 1

    @include transform( translate( -50% , -50% ) scale( 0 ))
    @include transition( all 0.2s ease-in-out )
    opacity: 0
    background-color: $main
    text-align: left
    position: fixed
    top: 50%
    left: 50%
    width: 400px
    height: auto
    padding: 20px
    z-index: 2
    h1 , p 
      text-align: left
      line-height: 27px
        padding: 6px 0
        margin: 0 6px
        box-shadow: -6px 0 0 tint( $dark , 90% ) , 6px 0 0 tint( $dark , 90% )
        background-color: tint( $dark , 90% )
        font-family: monospace
        font-size: 11px
    .close , i
      cursor: pointer
      position: absolute
      width: 30px
      height: 30px
      right: 10px
      top: 10px
      z-index: 2
      z-index: 1
      &:before , &:after
        content: ""
        position: absolute
        width: 20px
        height: 5px
        top: 50%
        left: 50%
        margin-top: -2px
        margin-left: -10px
        background-color: $accent
        @include rotate( -45deg )
        @include rotate( 45deg )