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HTML

              
                .book
	.page-left
	.page-right
	ul.rings
		- for (i = 0; i < 13; i++)
			li
				span

p Amazing drawings by 
	a(href="https://www.deviantart.com/kuvshinov-ilya" target="_blank") Kuvshinov Ilya
              
            
!

CSS

              
                // Import a font
@import url('https://fonts.googleapis.com/css?family=Sunflower:300')

*
	box-sizing border-box

poscenter(m=50%, n=m, tf1=, tf2=)
	position absolute
	left m
	top n
	transform '%s translate(-%s, -%s) %s' % (tf1 @left @top tf2)

body
	background #2f2f31
	min-height 100vh
	color #f
	perspective 600px
	overflow hidden

.book
	poscenter(,,rotateX(4deg) translateY(-3%))
	width 80%
	height 90vh
	max-height 768px

	&::before
	&::after
		content ""
		poscenter()
		width 1rem
		height 100%
		left calc(50% - .5rem)
		background-color #08
		z-index -1
	&::before
		border-top-right-radius 16px 6px
		border-bottom-right-radius 16px 6px

	&::after
		left calc(50% + .5rem)
		border-top-left-radius 16px 6px
		border-bottom-left-radius 16px 6px

.book div // pages
	background-color #b5
	width 50%
	height 100%
	position absolute
	top 0
	right calc(50% + .5rem)
	overflow auto

	& + div
		right auto
		left calc(50% + .5rem)

ul
	height 90%
	width 3rem
	poscenter()
	display flex
	flex-direction column
	
	li
		height 100%
		position relative

		&::before
		&::after
			content ""
			width 6px
			height 8px
			border-radius 25%
			poscenter(1%, 50%)
			background-color black
			z-index -5
		&::after
			poscenter(99%, 50%)

		span
			border-radius 50%
			width: 3rem
			poscenter()
			border-style solid
			border-color grey transparent transparent transparent
			border-width 5px 4px 0 4px
			z-index 5
	li:nth-of-type(n+7)
		transform rotate(180deg)

	for i in 1..13
		li:nth-of-type({i})::before
		li:nth-of-type({i})::after
			
			top calc(50% - size)
		li:nth-of-type({i}) span
			height abs(-18px+i*2)


.page-left
	text-align center
	padding 2.5%
	overflow auto

	img
		max-width 20%
		min-width  48px
		max-height 200px
		width auto
		height auto
		background-color #f
		padding .5rem
		margin .5rem
		display inline-block
		transition 1.5s

		&.active
		&:hover
			transform scale(1.04)
			box-shadow 0 4px 16px #0003

.page-right img
	poscenter()
	max-width 85%
	max-height 85%
	opacity 0
	transition .8s, opacity .45s .15s
	filter blur(32px)
	background-color #f
	padding 1rem

	&.active
		filter blur(0px)
		opacity 1



p
	poscenter(50%,99%)
	color #576
	font-family Sunflower
	font-size 0.8rem

	a
		color #697
              
            
!

JS

              
                let sources = [
	'https://orig00.deviantart.net/1dfd/f/2018/263/1/f/doro_by_kuvshinov_ilya-dcnbgw3.jpg',
	'https://orig00.deviantart.net/edd6/f/2018/170/3/5/depth_of_field_by_kuvshinov_ilya-dcetf0p.jpg',
	'https://orig00.deviantart.net/91c3/f/2018/170/1/9/boushi_by_kuvshinov_ilya-dcetfrj.jpg',
	'https://orig00.deviantart.net/1cf2/f/2018/263/6/7/uesaka_sumire_album_cover_illustration_by_kuvshinov_ilya-dcnbfu8.jpg',
	'https://orig00.deviantart.net/1dc6/f/2018/170/3/0/earring_by_kuvshinov_ilya-dceteuz.jpg',
	'https://orig00.deviantart.net/3171/f/2018/170/0/5/hayashi_by_kuvshinov_ilya-dcetah7.jpg',
	'https://orig00.deviantart.net/dc3b/f/2018/170/7/f/rose_by_kuvshinov_ilya-dcetaqj.jpg',
	'https://img00.deviantart.net/e978/i/2018/170/0/f/sanpo_by_kuvshinov_ilya-dceta26.jpg',
	'https://orig00.deviantart.net/bf7b/f/2018/170/9/2/my_artwork_collection_momentary_reprinted_by_kuvshinov_ilya-dcetaxx.jpg',
	'https://orig00.deviantart.net/9f20/f/2018/050/2/b/twin_tails_by_kuvshinov_ilya-dc3q77o.jpg'
]

let imgTag,
	clonedTag

for (let i = 0; i < sources.length; i++) {
	imgTag = document.createElement('img')
	imgTag.src = sources[i]
	if (i == 0) imgTag.classList.add('active')
	clonedTag = imgTag.cloneNode(true)
	document.querySelector('.page-left').appendChild(imgTag)
	document.querySelector('.page-right').appendChild(clonedTag)
}

const imgs = document.querySelectorAll('.page-left img')
let orig,
	curr

for (let i = 0; i < imgs.length; i++) {
	imgs[i].addEventListener('click', function () {
		if (this.classList.contains('active')) return false

		orig = Array.prototype.indexOf.call(imgs, document.querySelector('.page-left img.active'))
		curr = Array.prototype.indexOf.call(imgs, this)

		document.querySelector('.page-left img.active').classList.remove('active')
		this.classList.add('active')
		
		document.querySelectorAll('.page-left img')[orig].classList.remove('active')
		document.querySelectorAll('.page-right img')[orig].classList.remove('active')
		document.querySelectorAll('.page-left img')[curr].classList.add('active')
		document.querySelectorAll('.page-right img')[curr].classList.add('active')

		return false
	})
}

              
            
!
999px

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