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HTML 

              
                // Author: Ali Soueidan
// Author URI: https//: www.alisoueidan.com

- var slices = 0;

ul.happy#head

    li.slice

        .hair

        .folds#fold-1

        .folds#fold-2

    li.slice

        .ears#ear-l

        .ears#ear-r

        .eyes#eye-l
            .eyelid

        .eyes#eye-r
            .eyelid

    li.slice

        .nose
            .hole
            .hole

    li.slice

        .mouth

            .teeth.top
                .tooth
                .tooth
                .tooth
                .tooth
                .tooth

            .teeth.bottom
                .tooth
                .tooth
                .tooth
                .tooth
                .tooth

.corpus

    .belly

    .chain

ul#nav 
    li.happy#selected 😃
    li.astonished 😲
    li.feared 😱
    li.anguished  😧
    li.angry 😡
    li.tired 😪
    li.ondrugs 🎁

a( href='http://bit.ly/2JPuBjx' target="_blank" class='reference' ) 🔗 Ali Soueidan
!

CSS 

              
                // Author: Ali Soueidan
// Author URI: https//: www.alisoueidan.com

*
  list-style: none
  margin: 0
  padding: 0

$gap: 2vh
$shadow: hsla(0, 0%, 0%, 0.25)
$skin: hsla(169, 100%, 25%, 1)
$skin2: hsla(169, 100%, 20%, 1)
$hair: hsl(0, 100%, 60%)
$mouth: hsla(200, 100%, 25%, 1)
$eyes: hsla(40, 100%, 60%, 1)
$eye-accent-1: hsla(280, 100%, 25%, 1)
$bg: rgba(50,50,100,1)

.reference
  position: absolute
  right: 24px 
  bottom: 24px
  padding: $gap
  color: #fff
  font-family: arial
  text-decoration: none
  background: $bg
  box-shadow: 0 0 $gap $shadow
  border-radius: $gap

body 
  display: flex 
  flex-direction: column
  justify-content: center 
  align-items: center
  margin: 0
  height: 100vh
  background: #fff

ul#nav
  position: absolute
  transform: translateX(-100%)
  top: 0
  left: 0
  bottom: 0
  display: flex
  flex-direction: column
  justify-content: space-around
  align-items: center
  padding: $gap*1.5
  background: $bg
  box-shadow: inset 0 0 $gap/4 $shadow
  transition: .8s ease
  li
    display: flex
    justify-content: center
    align-items: center
    width: $gap*3
    max-width: $gap*3
    height: $gap*3
    max-height: $gap*3
    box-shadow: 0 0 $gap/4 $shadow
    border-radius: $gap/2
    transition: .2s ease
    background: #efefef
    font-size: $gap*1.5
    &#selected
      transform: scale(1.2)
      background: #fff
      &:hover
        transform: scale(1.2)
    &:hover
      cursor: pointer
      transform: scale(1.1)
      background: #fff

.corpus 
  position: absolute
  z-index: -1
  bottom: 0
  width: $gap*40
  height: 50vh
  background: radial-gradient($skin,$skin2)
  border-radius: $gap*20 $gap*20 0 0
  filter: drop-shadow($gap/2 $gap/2 $gap rgba(0,0,50,.5))
  box-shadow: inset $gap $gap $gap rgba(0,0,50,.1)

  .chain
    position: absolute
    top: 0% 
    left: 50% 
    transform: translate(-50%, -40%)
    width: $gap*15
    height: 50vh
    border: $gap solid $eyes
    border-radius: 50%
    filter: drop-shadow(0 0 $gap rgba(0,0,50,.05))
    box-shadow: inset $gap $gap $gap rgba(0,0,50,.1)

  .belly 
    position: absolute
    bottom: 0
    left: 50% 
    transform: translateX(-50%)
    width: $gap*20
    height: $gap*10
    border-right: $gap solid $shadow
    border-left: $gap solid $shadow
    border-radius: $gap*10 $gap*10 0 0
    filter: drop-shadow($gap $gap $gap rgba(0,0,50,.5))
    box-shadow: inset $gap $gap $gap rgba(0,0,50,.1)

#head
  position: relative
  display: flex
  flex-direction: column
  justify-content: space-between
  margin-bottom: $gap*8
  width: $gap*20
  height: $gap*30
  background: $skin
  border-radius: $gap*10
  filter: drop-shadow($gap/2 $gap/2 $gap*2 rgba(0,0,50,.5))
  box-shadow: inset $gap $gap $gap rgba(0,0,50,.1)
  transition: .8s ease

  li.slice 
    width: 100%
    height: $gap*5

    &:first-child
      position: relative
      display: flex
      flex-direction: column
      justify-content: center
      align-items: center
      border-radius: $gap*10 $gap*10 0 0
      height: $gap*10

      .hair
        position: absolute 
        top: -$gap
        left: 50%
        transform: translate(-50%,-50%)
        background: $hair
        width: $gap*3
        height: $gap*4
        border-radius: 50%
        clip-path: polygon(50% 50%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%)
       
      .folds
        height: $gap/2
        background: $shadow
        border-radius: $gap

      #fold-1
        margin-bottom: $gap
        width: 50%

      #fold-2
        width: 25%
    
    &:nth-child(2)
      position: relative
      display: flex
      justify-content: space-around 
      align-items: center

      .eyebrows
        position: absolute
        background: red
        width: $gap*10
        height: $gap*10
        transform: rotate(45deg)

      .ears
        position: absolute
        top: 0
        height: $gap*5
        width: $gap*2
        transition: .8s ease
        box-shadow: inset 0 0 $gap rgba(0,0,50,.5)
        &:before 
          position: absolute
          top: 50%
          left: 50%
          transform: translate(-50%,-50%)
          content: ""
          width: $gap/2
          height: $gap*3

        &#ear-l
          left: 0
          transform: translateX(-100%)
          border-right:  $gap/4 solid $shadow
          border-radius: $gap*2.5 $gap*2.5 $gap*2.5 $gap*5
          background: $skin
          &:before 
            border: $gap/4 solid $shadow
            border-right: 1px solid $shadow
            border-radius: $gap*2.5 $gap*2.5 $gap*2.5 $gap*5

        &#ear-r
          right: 0
          transform: translateX(100%)
          border-left: $gap/4 solid $shadow
          border-radius: $gap*2.5 $gap*2.5 $gap*5 $gap*2.5
          background: $skin
          &:before 
            border: $gap/4 solid $shadow
            border-left: 1px solid $shadow
            border-radius: $gap*2.5 $gap*2.5 $gap*5 $gap*2.5

      .eyes
        position: relative
        z-index: 1
        display: flex
        justify-content: center 
        align-items: center
        height: $gap*5
        width: $gap*5
        background: $eyes
        border: $gap/4 solid $shadow
        border-radius: 50%
        transition: 1s ease
        overflow: hidden
        transition: .8s ease
        &:before 
          content: ""
          height: $gap*2
          width: $gap*2
          background: #000
          border-radius: 50%
          border: $gap/4 solid $eye-accent-1
          transition: .8s ease
          filter: drop-shadow(0 0 $gap/8 $eye-accent-1)
          box-shadow: inset 0 0 $gap/2 rgba(50,50,75,1)
        &:after 
          content: ""
          position: absolute
          top: 35%
          right: 35%
          height: $gap/2
          width: $gap/2
          background: rgba(255,255,255,1)
          border-radius: 50%
          filter: drop-shadow(0 0 $gap/8 rgba(200,200,200,1))
          box-shadow: inset 0 0 $gap/2 rgba(120,120,120,.25)

        .eyelid
          position: absolute 
          transform: translateY(-100%)
          width: $gap*20
          height: $gap*20
          background: radial-gradient($skin,$skin2)
          transition: .8s ease
    
    &:nth-child(3)
      position: relative
      display: flex
      justify-content: center
      align-items: center

      .nose 
        display: flex
        justify-content: space-around
        align-items: center
        height: $gap*5
        width: $gap*5
        border-top: $gap/2 solid $shadow
        border-radius: 50%
        transition: .8s ease
        filter: drop-shadow(0 $gap/2 $gap/2 rgba(0,0,0,1))
        .hole 
          transform: translateY(-100%)
          width: $gap
          height: $gap
          background: $shadow
          border-radius: 50%

    &:last-child
      display: flex
      justify-content: center
      align-items: center
      border-radius: 0 0 $gap*10 $gap*10
      height: $gap*10

      .mouth 
        display: flex
        flex-direction: column
        justify-content: space-between
        align-items: center
        width: $gap*12
        height: $gap*6
        background: $mouth
        border-radius: $gap $gap $gap*6 $gap*6
        border: $gap/2 solid $shadow
        overflow: hidden
        transition: .8s ease
        filter: drop-shadow(0 0 $gap rgba(0,0,50,.2))
        box-shadow: inset 0 0 $gap*4 rgba(0,0,0,.75)

        .teeth 
          display: flex
          justify-content: space-around
          width: 100%
          height: $gap 

          &.top

            .tooth
              width: 22%
              height: $gap
              background: #fff
              border-right: $gap/10 solid $shadow
              border-bottom: $gap/10 solid $shadow
              border-left: $gap/10 solid $shadow
              border-radius: $gap/4 $gap/4 $gap/2 $gap/2
              filter: drop-shadow(0 0 $gap rgba(0,0,0,.2))
              box-shadow: inset 0 0 $gap rgba(200,200,200,.25)

          &.bottom

            .tooth
              width: 22%
              height: $gap
              border: $gap/10 solid $shadow
              background: #fff
              border-radius: $gap/2 $gap/2 $gap/4 $gap/4
              filter: drop-shadow(0 0 $gap rgba(0,0,0,.2))
              box-shadow: inset 0 0 $gap rgba(200,200,200,.25)






  &.happy
      
      .eyes
        transform: scale(1)

        &#eye-l
          &:before
            transform: scale(1.33)

        &#eye-r
          &:before
            transform: scale(1.33)






  &.Astonished
    transform: translateY(-$gap*2)

    &:first-child
      
      .eyes
        transform: scale(.75)

    .slice:last-child 
      
      .mouth 
        border-radius: $gap*6 $gap*6 $gap $gap
        transform: scale(.75) rotate(-5deg)






  &.feared

    &:nth-child(1)
      
      .eyes
        transform: scale(1.25)

    .slice:last-child 
      
      .mouth 
        height: $gap*8
        border-radius: $gap*6 $gap*6 $gap*4 $gap*4






  &.angry
    transform: translateY(-$gap*2) rotate(-5deg)

    &:first-child

      .ears
        width: $gap*1.25!important
      
      .eyes
        transform: scale(1)

        &#eye-l
          clip-path: polygon(30% 0%, 61% 11%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%)
          &:before
            transform: scale(.75)
            border: $gap solid $eye-accent-1

        &#eye-r
          clip-path: polygon(34% 14%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%)
          &:before
            transform: scale(.75)
            border: $gap solid $eye-accent-1

    &:nth-child(1)
      
      .nose 
        transform: scale(1.2)

    .slice:last-child 
      
      .mouth 
        transform: rotate(4deg)
        height: $gap*2
        border-radius: $gap*6 $gap*6 $gap*4 $gap*4






  &.anguished
    transform: translateY(-$gap*2) rotate(5deg)

    &:nth-child(1)

      .eyes 
        border: $gap/4 solid $skin!important
        transform: scale(1)

      #eye-l
        transform: scale(1.25)
        .eyelid
          transform: translateY(-62.5%) rotate(-23deg) 
          &:before
            transform: scale(.75)

      #eye-r
        transform: scale(.75)
        .eyelid
          transform: translateY(-62.5%) rotate(23deg) 
          &:before
            transform: scale(.75)

    .slice:last-child 
      
      .mouth 
        height: $gap*6
        border-radius: $gap*2 $gap*2 $gap*6 $gap*6
        transform: rotate(-5deg)






  &.tired
    transform: translateY($gap*4)

    &:first-child

      .ears
        width: $gap*1.75!important

        &#ear-l
          border-radius: $gap*5 $gap*2.5 $gap*2.5 $gap*2.5!important
          &:before 
            border-radius: $gap*5 $gap*2.5 $gap*2.5 $gap*2.5!important

        &#ear-r
          border-radius: $gap*2.5 $gap*5 $gap*2.5 $gap*2.5!important
          &:before 
            border-radius: $gap*2.5 $gap*5 $gap*2.5 $gap*2.5!important

      .eyes 
        border: $gap/4 solid $skin!important
        transform: scale(.75)
        .eyelid
          z-index: 1
          border-bottom: $gap/2 solid $shadow
          border-radius: 50%

      #eye-l .eyelid
        transform: translateY(-49%)

      #eye-r .eyelid
        transform: translateY(-52%)

    .slice:last-child 
      
      .mouth 
        height: $gap*8
        border-radius: $gap*2 $gap*2 $gap*6 $gap*6
        transform: rotate(-5deg)





  &.ondrugs
    transform: translateY(-$gap*2)

    &:nth-child(1)
      
      .eyes
        transform: scale(1.25)

        &#eye-l
          &:before
            transform: scale(1.75)
            border: $gap/6 solid $eye-accent-1

        &#eye-r
          &:before
            transform: scale(1.75)
            border: $gap/6 solid $eye-accent-1

    &:nth-child(1)
      
      .nose 
        transform: scale(.75)

    .slice:last-child 
      
      .mouth 
        height: $gap*8
        border-radius: $gap*2 $gap*2 $gap*6 $gap*6
!

JS 

              
                // Author: Ali Soueidan
// Author URI: https//: www.alisoueidan.com

let target = document.querySelector("#head");
let emotion = document.querySelectorAll("#nav li");
let menu = document.querySelector("#nav");

let i = 0;
emotion.forEach( function() { 
    emotion[i].addEventListener("click", function() {
        clearInterval(walkThrough);
        target.removeAttribute("class");
        target.classList.add(this.classList[0]);
        let i = 0;
        emotion.forEach( function() { 
            emotion[i].removeAttribute("id", "selected");
            ++i;
        });
        this.setAttribute("id", "selected");
    });
    ++i;
});

// Walkthrough emotions on start (sparing the last one for better thumbnail)
let n = 1;
let walkThrough = setInterval(() => {
    target.removeAttribute("class");
    target.classList.add(emotion[n].classList[0]);
    ++n;
    if ( n == emotion.length ) {
        target.removeAttribute("class");
        target.classList.add(emotion[0].classList[0]);
        setTimeout(() => {
            menu.style.transform = "translateX(0)";
        }, 1000);
        clearInterval(walkThrough);
    }
}, 1250);
!
999px

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