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              <div class="carousel">
    <div class="carousel__control">
    </div>
    <div class="carousel__stage">
        <div class="spinner spinner--left">
            <div class="spinner__face js-active" data-bg="#27323c">
                <div class="content" data-type="iceland">
                    <div class="content__left">
                        <h1>ICELAND<br><span>EUROPE</span></h1>
                    </div>
                    <div class="content__right">
                        <div class="content__main">
                            <p>“As I flew north to begin my third circuit of Iceland in four years, I was slightly anxious. The number of visitors to Iceland has doubled in that period, and I feared this might mean a little less magic to go around. At the end of this trip, 6000km later, I'm thrilled to report that the magic levels remain high. It's found in glorious football victories and Viking chants, kayaking among icebergs, sitting with puffins under the midnight sun and crunching across brand-new lava fields.” </p>
                          <p>– Carolyn Bain</p>
                        </div>
                        <h3 class="content__index">01</h3>
                    </div>
                </div>
            </div>
            <div class="spinner__face" data-bg="#19304a">
                <div class="content" data-type="china">
                    <div class="content__left">
                        <h1>CHINA<br><span>ASIA</span></h1>
                    </div>
                    <div class="content__right">
                        <div class="content__main">
                            <p>“Its modern face is dazzling, but China is no one-trick pony. The world's oldest continuous civilisation isn't all smoked glass and brushed aluminium and while you won't be tripping over artefacts – three decades of round-the-clock development and rash town-planning have taken their toll – rich seams of antiquity await.”</p>
                          <p>– Damian Harper</p>
                        </div>
                        <h3 class="content__index">02</h3>
                    </div>
                </div>
            </div>
            <div class="spinner__face" data-bg="#2b2533">
                <div class="content" data-type="usa">
                    <div class="content__left">
                        <h1>USA<br><span>NORTH AMERICA</span></h1>
                    </div>
                    <div class="content__right">
                        <div class="content__main">
                            <p>“When it comes to travel, America has always floored me with its staggering range of possibilities. Not many other countries have so much natural beauty – mountains, beaches, rainforest, deserts, canyons, glaciers – coupled with fascinating cities to explore, an unrivaled music scene and all the things that make travel so rewarding (friendly locals, great restaurants and farmers markets, and plenty of quirky surprises).” </p>
                          <p>– Regis St Louis</p>
                        </div>
                        <h3 class="content__index">03</h3>
                    </div>
                </div>
            </div>
            <div class="spinner__face" data-bg="#312f2d">
                <div class="content" data-type="peru">
                    <div class="content__left">
                        <h1>PERU<br><span>SOUTH AMERICA</span></h1>
                    </div>
                    <div class="content__right">
                        <div class="content__main">
                            <p>“For me, Peru is the molten core of South America, a distillation of the oldest traditions and the finest building, weaving and art made by the most sophisticated cultures on the continent. In Peru the wildest landscapes – from frozen Andean peaks to the deep Amazon – help us re-forge our connection to the natural world. It is also a cultural stew, where diverse peoples live side by side, negotiating modern life with humor and aplomb. Beyond that, the cuisine alone makes it worth the trip. Every return is rich and surprising.”</p>
                          <p>– Carolyn McCarthy</p>
                        </div>
                        <h3 class="content__index">04</h3>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!--  Poor man's preloader -->
<div style="height: 0; width: 0; overflow: hidden">
<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/peru.jpg">
<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/canada.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/china.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/usa.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/iceland.jpg"></div>
            
          
!
            
              $page-margin-y = 20px
$page-margin-x = 20px

$width = "calc(50vw - (%s))" % $page-margin-x
$half-width = "calc(50vw - (%s))" % ($page-margin-x / 2)
$neg-half-width = "calc(-25vw + %s)" % ($page-margin-x / 2)

$height = "calc(100vh - %s)" % ($page-margin-y * 2)
$half-height = "calc(50vh - %s)" % $page-margin-y
$neg-half-height = "calc(-50vh + %s)" % $page-margin-y

$transition-dur = 1s

html
body
    height: 100%
    padding: 0
    margin: 0

body
    background: #fff
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif
    
// -- Carousel

.js-transitions-disabled *
    transition: none !important
    
.carousel
    position: relative
    height: 100%
    overflow: hidden
    perspective: 50vw
    perspective-origin: 50% 50%
    
.carousel__control
    position: absolute
    height: 160px
    width: 40px
    background: #fff
    right: 0
    top: 0
    bottom: 0
    margin: auto
    z-index: 1
    
    a
      position: relative
      display: block
      width: 100%
      padding-top: 75%
      box-sizing: border-box
      
      &:hover:before
        background-color: rgba(0, 0, 0,0.4)
        
      &.active:before
      &.active:hover:before
        background-color: rgba(0, 0, 0,0.6)
      
      &:first-child
        margin-top: 15px
      
      &:before
        position: absolute
        top: 50%
        left: 0
        right: 0
        margin: auto
        border-radius: 50%
        padding-top: 25%
        width: 25%
        background: rgba(0, 0, 0, 0.2)
        content: ''
        display: block
        margin-top: -12.5%
    
.carousel__stage
    position: absolute
    top: $page-margin-y
    bottom: $page-margin-y
    left: $page-margin-x
    right: $page-margin-x
    margin: auto
    transform-style: preserve-3d
    transform: translateZ($neg-half-height)
    
.spinner 
    position: absolute
    width: $width
    height: $height
    top: 0
    left: 0
    right: auto
    bottom: 0
    margin: auto
    transform-style: preserve-3d
    transition: transform $transition-dur
    backface-visibility: hidden
    transform-origin: 50% 50%
    transform: rotateX(0)
    
    .js-spin-fwd &
        transform: rotateX(-90deg)
        
    .js-spin-bwd &
        transform: rotateX(90deg)
        
.spinner--right 
    .js-spin-fwd &
        transform: rotateX(90deg)
        
    .js-spin-bwd &
        transform: rotateX(-90deg)
        
.spinner--right
    right: 0
    left: auto
        
.spinner__face
    display: none
    position: absolute
    width: 100%
    height: 100%
    overflow: hidden
        
    &.js-next
        display: block
        transform: rotateX(90deg) translateZ($half-height)
        
        .spinner--right &
            transform: rotateX(270deg) translateZ($half-height)
            
    .js-spin-bwd & 
      &.js-next
        transform: rotateX(-90deg) translateZ($half-height)
        
.js-spin-bwd
    .spinner--right
        .spinner__face.js-next
            transform: rotateX(-270deg) translateZ($half-height)
    
.js-active
    display: block
    transform: translateZ($half-height)

// -- Content

.content
    position: absolute
    width: 200%
    height: 100%
    left: 0
    
    .spinner--right &
        left: -100%
    
.content__left
.content__right
    position: absolute
    left: 0
    top: 0
    width: 50%
    height: 100%
    
.content__right
    right: 0
    left: auto
    
.content__left
    background-repeat: no-repeat
    background-size: cover
    
    &:after
        position: absolute
        display: block
        content: ""
        width: 100%
        height: 100%
        background-color: rgba(0, 0, 0, 0.1)
    
    h1
        position: absolute
        top: 50%
        margin-top: -3vw
        text-align: center
        font-family: oswald
        font-size: 5vw
        height: 10vw
        opacity: 1
        color: #fff
        width: 100%
        letter-spacing: 0.15em
        line-height: 0.6
        
    span
        font-size: 1vw
        font-weight: 300
        letter-spacing: 0.2em
        opacity: 0.9
        font-family: Merriweather
        
.content__right
    display: flex
    align-items: center
    justify-content: center

    .content__main
        position: absolute
        font-family: Merriweather, serif
        text-align: left
        color: #fff
        font-size: 1.3vw
        padding: 0 8vw
        line-height: 1.65
        font-weight: 300
        margin: 0
        opacity: 0.8
        
        p:last-child
          // font-style:italic
          text-transform: uppercase
          letter-spacing: 0.15em
          font-size: 0.85em
        
    .content__index
        font-size: 30vh
        position: absolute
        right: -1vh
        top: 35vh
        opacity: 0.04
        font-family: oswald
        color: #fff

[data-type="iceland"]
    .content__left
        background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/iceland.jpg')
        
        .spinner--right &
            background-image: none
            
[data-type="china"]
    .content__left
        background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/china.jpg')
        
        .spinner--right &
            background-image: none
            
[data-type="usa"]
    .content__left
        background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/usa.jpg')
        
        .spinner--right &
            background-image: none
            
[data-type="peru"]
    .content__left
        background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/215059/peru.jpg')
        
        .spinner--right &
            background-image: none
            
          
!
            
              let activeIndex = 0
let limit = 0
let disabled = false
let $stage
let $controls
let canvas = false

const SPIN_FORWARD_CLASS = 'js-spin-fwd'
const SPIN_BACKWARD_CLASS = 'js-spin-bwd'
const DISABLE_TRANSITIONS_CLASS = 'js-transitions-disabled'
const SPIN_DUR = 1000

const appendControls = () => {
  for (let i = 0; i < limit; i++) {
    $('.carousel__control').append(`<a href="#" data-index="${i}"></a>`)
  }
  let height = $('.carousel__control').children().last().outerHeight()
  
  $('.carousel__control').css('height', (30 + (limit * height)))
  $controls = $('.carousel__control').children()
  $controls.eq(activeIndex).addClass('active')
}

const setIndexes = () => {
    $('.spinner').children().each((i, el) => {
        $(el).attr('data-index', i)
        limit++
    })
}

const duplicateSpinner = () => {
    const $el = $('.spinner').parent()
    const html = $('.spinner').parent().html()
    $el.append(html)
    $('.spinner').last().addClass('spinner--right')
    $('.spinner--right').removeClass('spinner--left')
}

const paintFaces = () => {
    $('.spinner__face').each((i, el) => {
        const $el = $(el)
        let color = $(el).attr('data-bg')
        $el.children().css('backgroundImage', `url(${getBase64PixelByColor(color)})`)
    })
}

const getBase64PixelByColor = (hex) => {
    if (!canvas) {
        canvas = document.createElement('canvas')
        canvas.height = 1
        canvas.width = 1
    }
    if (canvas.getContext) {
        const ctx = canvas.getContext('2d')
        ctx.fillStyle = hex
        ctx.fillRect (0, 0, 1, 1)
        return canvas.toDataURL()
    }
    return false
}

const prepareDom = () => {
    setIndexes()
    paintFaces()
    duplicateSpinner()
    appendControls()
}

const spin = (inc = 1) => {
    if (disabled) return
    if (!inc) return
    activeIndex += inc
    disabled = true

    if (activeIndex >= limit) {
        activeIndex = 0
    }
  
    if (activeIndex < 0) {
        activeIndex = (limit - 1)
    }

    const $activeEls = $('.spinner__face.js-active')
    const $nextEls = $(`.spinner__face[data-index=${activeIndex}]`)
    $nextEls.addClass('js-next')
  
    if (inc > 0) {
      $stage.addClass(SPIN_FORWARD_CLASS)
    } else {
      $stage.addClass(SPIN_BACKWARD_CLASS)
    }
    
    $controls.removeClass('active')
    $controls.eq(activeIndex).addClass('active')
  
    setTimeout(() => {
        spinCallback(inc)
    }, SPIN_DUR, inc)
}

const spinCallback = (inc) => {
    
    $('.js-active').removeClass('js-active')
    $('.js-next').removeClass('js-next').addClass('js-active')
    $stage
        .addClass(DISABLE_TRANSITIONS_CLASS)
        .removeClass(SPIN_FORWARD_CLASS)
        .removeClass(SPIN_BACKWARD_CLASS)
  
    $('.js-active').each((i, el) => {
        const $el = $(el)
        $el.prependTo($el.parent())
    })
    setTimeout(() => {
        $stage.removeClass(DISABLE_TRANSITIONS_CLASS)
        disabled = false
    }, 100)

}

const attachListeners = () => {
  
    document.onkeyup = (e) => {
        switch (e.keyCode) {
            case 38:
                spin(-1)
                break
            case 40:
                spin(1)
                break
            }
    }
 
    $controls.on('click', (e) => {
      e.preventDefault()
      if (disabled) return
      const $el = $(e.target)
      const toIndex = parseInt($el.attr('data-index'), 10)
      spin(toIndex - activeIndex)
      
    })
}

const assignEls = () => {
    $stage = $('.carousel__stage')
}

const init = () => {
    assignEls()
    prepareDom()
    attachListeners()
}


$(() => {
    init();
});
            
          
!
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