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HTML

              
                #slider.slider
  .slide#slide-left
    .slide-holder
      .slide-bg.bg-previous
      .slide-bg.bg-current
      .slide-bg.bg-next
  .slide#slide-center
    .slide-holder
      .slide-bg.bg-previous
      .slide-bg.bg-current
      .slide-bg.bg-next
  .slide#slide-right
    .slide-holder
      .slide-bg.bg-previous
      .slide-bg.bg-current
      .slide-bg.bg-next
a(href="#").arrow#left-arrow
  i.fa.fa-arrow-circle-o-left
a(href="#").arrow#right-arrow
  i.fa.fa-arrow-circle-o-right
              
            
!

CSS

              
                @import bourbon

$poussin: url("http://images.metmuseum.org/CRDImages/ep/original/46_160.jpg")
$picasso: url("http://uploads6.wikiart.org/images/pablo-picasso/the-abduction-of-sabines-1962-1.jpg")
$rubens: url("https://upload.wikimedia.org/wikipedia/commons/7/72/Peter_Paul_Rubens_(taller)_-_Rapto_de_las_Sabinas.jpg")

html, body
  margin: 0
  height: 100%
  background: #F4F1E9

.arrow
  font-size: 2em
  color: #363f85
  position: absolute
  top: 50%
  left: 50%
  &#left-arrow
    +transform(translate(-11em, -50%))
  &#right-arrow
    +transform(translate(10em, -50%))
  +transition(.2s)
  &:hover
    color: #B3B2AD

.slider
  position: relative
  left: 50%
  top: 50%
  +transform(translate(-50%, -50%))
  width: 600px
  height: 200px
  
.slide
  float: left
  position: relative
  width: percentage(1/3)
  height: 100%
  overflow-x: hidden
  border-radius: 50%
  box-shadow: 0px 0px 15px rgba(0,0,0,0.5)
  &#slide-center
    z-index: 1
    box-shadow: 0px 0px 15px rgba(0,0,0,0.75)
    +transform(scale(1.3))

.slide-holder
  width: 300%
  height: 100%
  display: block
  position: relative
  top: 0
  +transform(translateX(percentage(-1/3)))
  
.slide-bg
  width: percentage(1/3)
  height: 100%
  background-size: cover
  background-position: center center
  background-repeat: no-repeat
  display: inline-block
  float: left
  margin: 0
  
#slide-left
  .bg-previous
    background-image: $rubens
  .bg-current
    background-image: $poussin
  .bg-next
    background-image: $picasso
#slide-center
  .bg-previous
    background-image: $poussin
  .bg-current
    background-image: $picasso
  .bg-next
    background-image: $rubens
#slide-right
  .bg-previous
    background-image: $picasso
  .bg-current
    background-image: $rubens
  .bg-next
    background-image: $poussin

              
            
!

JS

              
                # Inspiration:
# http://coolcarousels.frebsite.nl/c/59/
# & 
# https://css-tricks.com/slider-with-sliding-backgrounds/

$right_arrow = $('#right-arrow')
$left_arrow = $('#left-arrow')

$right_arrow.click (e) ->
  e.preventDefault()
  $('.slide-holder').velocity('finish') # finish any current animations
  animate_next('#slide-right')
  animate_next('#slide-center', 175)
  animate_next('#slide-left', 350)

$left_arrow.click (e) ->
  e.preventDefault()
  $('.slide-holder').velocity('finish') # finish any current animations
  animate_previous('#slide-left')
  animate_previous('#slide-center', 175)
  animate_previous('#slide-right', 350)
  
animate_next = (selector, delay=0, cb=null) ->
  setTimeout ->
    $el = $("#{selector} .slide-holder") # select the elements
    $bg_prev = $el.find('.bg-previous')
    $bg_curr = $el.find('.bg-current')
    $bg_next = $el.find('.bg-next')
    $.Velocity.hook($el, "translateX", "-#{100/3}%") # set transform before animating
    $.Velocity.animate($el, { # animate the transform
      translateX: "-#{200/3}%"
      duration: 350
    }).then (elms) -> # reorder the slide-bg's and recenter the slide-holder
      next_bg_image = $.Velocity.hook($bg_prev, "background-image")
      $.Velocity.hook($bg_prev, "background-image", $.Velocity.hook($bg_curr, "background-image"))
      $.Velocity.hook($bg_curr, "background-image", $.Velocity.hook($bg_next, "background-image"))
      $.Velocity.hook($el, "translateX", "-#{100/3}%")
      $.Velocity.hook($bg_next, "background-image", next_bg_image)
      cb(elms) if typeof cb is 'function'
  , delay
  
animate_previous = (selector, delay, cb) ->
  setTimeout ->
    $el = $("#{selector} .slide-holder") # select the elements
    $bg_prev = $el.find('.bg-previous')
    $bg_curr = $el.find('.bg-current')
    $bg_next = $el.find('.bg-next')
    $.Velocity.hook($el, "translateX", "-#{100/3}%") # set transform before animating
    $.Velocity.animate($el, { # animate the transform
      translateX: "0"
      duration: 350
    }).then (elms) -> # reorder the slide-bg's and recenter the slide-holder
      prev_bg_image = $.Velocity.hook($bg_next, "background-image")
      $.Velocity.hook($bg_next, "background-image", $.Velocity.hook($bg_curr, "background-image"))
      $.Velocity.hook($bg_curr, "background-image", $.Velocity.hook($bg_prev, "background-image"))
      $.Velocity.hook($el, "translateX", "-#{100/3}%")
      $.Velocity.hook($bg_prev, "background-image", prev_bg_image)
      cb(elms) if typeof cb is 'function'
  , delay
              
            
!
999px

Console