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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              // as seen on a.singlediv.com

// helpers
book-height(height)
  linear-gradient(to bottom, #111 height, transparent height)

book-grey(start,end)
  linear-gradient(to right, transparent start, #222 start,
                            #2e2e2e end, transparent end)
book-color(color,shade,start,end)
  linear-gradient(to right, transparent start, color start,
                            darken(color,shade) end, transparent end)

// black and white books
div
  width: 100vw
  height: 100vh
  min-height: 350px
  margin: 0
  position: relative
  background-color: #111
  background-image: linear-gradient(to top, #222 5%, #111 6%,
                                            #111 7%, transparent 7%),
                    book-height(30%),

                    linear-gradient(to right, #222, #2e2e2e 5%, transparent 5%), // book 1
                    book-grey(  6%, 9%), // book 2
                    book-grey( 27%,34%), // book 6
                    book-grey( 51%,57%), // book 11

                    book-height(35%),
                    book-grey( 42%,44%), // book 8
                    book-grey( 45%,47%), // book 9
                    book-grey( 48%,50%), // book 10
                    book-grey( 87%,91%), // book 13

                    book-height(37.5%),
                    book-grey( 14%,20%), // book 4

                    book-height(40%),
                    book-grey( 10%,13%), // book 3
                    book-color(#222,3,21%,25%), // book 5
                    book-grey( 58%,64%), // book 12
                    book-grey( 92%,95%), // book 14

                    book-height(48%),
                    book-color(#222,3,96%,99%), // book 15
                    linear-gradient(to bottom, transparent 68.5%,
                                               transparent 76%,
                                               #111 76%,
                                               #111 77.5%,
                                               transparent 77.5%,
                                               transparent 86%,
                                               #111 86%,
                                               #111 87.5%,
                                               transparent 87.5%),
                    book-grey( 35%,41%), // book 7

                    book-height(68%),
                    linear-gradient(to right, transparent 78%,
                                              #333 78%,
                                              #333 80%,
                                              transparent 80%,
                                              transparent 82%,
                                              #333 82%,
                                              #333 83%,
                                              transparent 83%),
                    book-grey( 66%,85%) // box
  background-size: 300px 150px
  background-position: center bottom

  // colorful books
  &:before
    content: ''
    width: 100%
    height: 100%
    position: absolute
    left: 0
    top: 0
    background-color: #111
    background-image: linear-gradient(to top, tan 5%, #111 6%,
                                              #111 7%, transparent 7%),
                      book-height(30%),

                      linear-gradient(to right, firebrick, darken(firebrick,10) 5%, transparent 5%), // book 1
                      book-color(tomato,10,6%, 9%), // book 2
                      book-color(darkolivegreen,10,27%,34%), // book 6
                      book-color(salmon,10,51%,57%), // book 11

                      book-height(35%),
                      book-color(teal,10,42%,44%), // book 8
                      book-color(teal,10,45%,47%), // book 9
                      book-color(teal,10,48%,50%), // book 10
                      book-color(lightslategrey,17,87%,91%), // book 13

                      book-height(37.5%),
                      book-color(darkkhaki,15,14%,20%), // book 4

                      book-height(40%),
                      book-color(olive,10,10%,13%), // book 3
                      book-color(saddlebrown,10,21%,25%), // book 5
                      book-color(saddlebrown,10,58%,64%), // book 12
                      book-color(darkslategrey,10,92%,95%), // book 14

                      book-height(48%),
                      book-color(darkslategrey,10,96%,99%), // book 15
                      linear-gradient(to bottom, transparent 68.5%,
                                                 transparent 76%,
                                                 #111 76%,
                                                 #111 77.5%,
                                                 transparent 77.5%,
                                                 transparent 86%,
                                                 #111 86%,
                                                 #111 87.5%,
                                                 transparent 87.5%),
                      book-color(indianred,10,35%,41%), // book 7

                      book-height(68%),
                      linear-gradient(to right, transparent 78%,
                                                rosybrown 78%,
                                                rosybrown 80%,
                                                transparent 80%,
                                                transparent 82%,
                                                rosybrown 82%,
                                                rosybrown 83%,
                                                transparent 83%),
                      book-color(brown,10,66%,85%) // box
    background-size: 300px 150px
    background-position: center bottom
    clip-path: circle(150px at center center)
    animation: flashlight 5000ms infinite

  // eyes
  &:after
    content: ''
    width: 25px
    height: 10px
    position: absolute
    left: calc(50% + 59px)
    bottom: 100px
    background-repeat: no-repeat
    background-image: radial-gradient(circle, white 50%, transparent 50%),
                      radial-gradient(circle, white 50%, transparent 50%)
    background-size: 10px 10px
    background-position: left center, right center
    animation: eyes 5000ms infinite

@keyframes flashlight
  0%, 9%
    opacity: 0
    clip-path: circle(150px at 45% 10%)
  10%, 15%, 85%
    opacity: 1
  50%
    clip-path: circle(150px at 60% 20%)
  54%, 100%
    clip-path: circle(150px at 55% 92%)
  88%, 100%
    opacity: 0

@keyframes eyes
  0%, 52%
    opacity: 0
  53%, 87%
    opacity: 1
  64%
    transform: scaleY(1)
  67%
    transform: scaleY(0)
  70%
    transform: scaleY(1)
  88%, 100%
    opacity: 0
            
          
!
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