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HTML 

              
                <h1>Happy Halloween</h1>
<h2>Trick or treat</h2>
<div class="wrapper">
  <div class="ghoul-wrapper">
    <div class="ghoul">
      <div class="hand"></div>
      <div class="fingers">
        <div id="thumb"></div>
        <div id="pointer"></div>
        <div id="middle"></div>
        <div id="index"></div>
        <div id="pinky"></div>
      </div>
    </div>
  </div>
  <div class="witch-wrapper">
    <div class="witch-hat-point"></div>
    <div class="witch-hat-top"></div>
    <div class="witch-hat-middle">
      <div id="buckle"></div>
    </div>
    <div class="witch-hat-bottom"></div>
  </div>
  <div class="skull-wrapper">
    <div class="skull-top">
      <div id="skull-eyes"></div>
      <div id="skull-nose"></div>
    </div>
    <div class="skull-bottom"></div>
  </div>
  <div class="tombstone-wrapper">
    <div class="tombstone">
      <p>RIP</p>
      <span></span>
    </div>
    <div class="tombstone-bottom"></div>
  </div>
  <div class="pumpkin-wrapper">
    <div class="pumpkin">
      <div id="pumpkin-eyes"></div>
      <div id="pumpkin-mouth"></div>
    </div>
  </div>
  <div class="bottle-wrapper">
    <div class="bottle">
      <div id="liquid"></div>
    </div>
    <div class="neck"></div>
     <div class="top"></div>
  </div>
   <div id="bottle2" class="bottle-wrapper">
    <div class="bottle">
      <div id="liquid"></div>
    </div>
    <div class="neck"></div>
     <div class="top"></div>
  </div>
  <div class="bubbles"></div>
</div>
<div class="shadows">
  <div class="shadow"></div>
  <div class="shadow"></div>
  <div class="shadow"></div>
</div>
!

CSS 

              
                html {
  width: 100%;
  height: 100vh;
  background-color: #8e76c4;
  overflow: hidden;
  display: flex; 
  justify-content: center;
  align-items: center;
}
body{
  background-color: transparent;
}
h1 {
  color: #fea263;
  text-align: center;
  font-family: sans-serif;
  font-weight: 700;
  font-size: 30px;
  letter-spacing: 10px;
  text-transform: uppercase;
  margin: 0;
}
h2 {
  color: #ffedc5;
  text-align: center;
  font-family: sans-serif;
  font-weight: 700;
  font-size: 25px;
  letter-spacing: 5px;
  text-transform: uppercase;
  margin: 0;
}
.wrapper {
  position: relative;
  height: 400px;
  width: 750px;
}

.bottle-wrapper {
  position: absolute;
  bottom: 0;
  right: 50px;
}
.bottle-wrapper#bottle2 {
  position: absolute;
  bottom: -8px;
  right: 0px;
}
.bottle {
  position: relative;
  width: 50px;
  height: 50px;
  border-radius: 5px;
  background-color: #e7c0b1;
  overflow: hidden;
}
.bottle #liquid {
  position: absolute;
  height: 20px;
  width: 40px;
  bottom: 0;
  left: 5px;
  bottom: 5px;
  background-color: #f8927b;
  border-radius: 5px;
  z-index: 2;
  -webkit-animation: fill 10s infinite;
  animation: fill 10s infinite;
}
.neck {
  position: absolute;
  width: 17px;
  height: 10px;
  top: -10px;
  left: 16px;
  background-color: #e7c0b1;
  z-index: 2;
}
.top {
  position: absolute;
  width: 25px;
  height: 5px;
  top: -15px;
  left: 12px;
  background-color: #e7c0b1;
  z-index: 2;
}
.bottle:after,
.neck:after,
.top:after {
  content: "";
  position: absolute;
  width: 50%;
  height: 100%;
  right: 0;
  background-color: #dcb7a5;
  border-radius: 0 5px;
}
#bottle2 {
  transform: scale(.7);
}
#bottle2 #liquid {
  background-color: #7e33aa;
  animation-delay: -2s;
}
.pumpkin-wrapper {
  position: absolute;
  bottom: 0;
  left: 500px;
  z-index: 30;
}
.pumpkin {
  position: relative;
  height: 8rem;
  width: 6rem;
  background-color: #ffa066;
  border-radius: 100%;
  box-shadow: -30px 0 0 0 #fe9554, -60px 0 0 0 #f18d4f, 30px 0 0 0 #fe9554, 60px 0 0 0 #f18d4f;
}
.pumpkin:before {
  content: "";
  position: absolute;
  width: 11px;
  height: 25px;
  top: -20px;
  left: 40px;
  background-color: #94a789;
}
.pumpkin:after {
  content: "";
  position: absolute;
  width: 11px;
  height: 25px;
  top: -20px;
  left: 51px;
  background-image: linear-gradient(70deg, #94a789 50%, transparent 50%);
}
#pumpkin-eyes:before {
  content: "";
  position: absolute;
  width: 30px;
  height: 23px;
  top: 20%;
  right: 70%;
  -webkit-transform: scaleX(-1);
  transform: scaleX(-1);
  background-image: linear-gradient(to left top, #400c18 50%, transparent 50%);
}
#pumpkin-eyes:after {
    content: "";
    position: absolute;
    width: 30px;
    height: 23px;
    top: 20%;
    left: 70%;
    background-image: linear-gradient(to left top, #400c18 50%, transparent 50%);
}
#pumpkin-mouth {
  position: absolute;
  border-radius: 0 0 30px 30px;
  width: 100px;
  height: 20px;
  top: 60%;
  background-color: #400c18;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  -webkit-animation: laugh 4s infinite;
  animation: laugh 4s infinite;
}
#pumpkin-mouth:before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: #ffa066;
  top: 0;
  left: 50%;

}
#pumpkin-mouth:after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: #ffa066;
  bottom: 0;
  right: 70%;
}

.tombstone-wrapper {
  position: absolute;
  bottom: 0;
  left: 350px;
  z-index: 29;
}
.tombstone {
  position: relative;
  height: 17rem;
  width: 9rem;
  background-color: #92a8b5;
  border: #b5d0e1 solid 5px;
  border-radius: 70px 70px 0 0;
  color: #b5d0e1;
  font-family: sans-serif;
  font-weight: 700;
  font-size: 30px;
  letter-spacing: 10px;
}
.tombstone:after {
  content: "";
  position: absolute;
  bottom: 0;
  background-color: rgba(20, 1, 30, 0.1);
  width: 100%;
  height: 50px;
}
.tombstone p {
  padding-top: 30px;
  margin-left: 35px;
}
.tombstone span:before {
  content: "";
  position: absolute;
  left: 35px;
  top: 100px;
  width: 65px;
  height: 5px;
  background: #b5d0e1;
  box-shadow: 
    0 10px 0 0 #b5d0e1,
    0 20px 0 0 #b5d0e1;
}
.tombstone-bottom {
  position: absolute;
  bottom: 0;
  left: -15px;
  width: 11.5rem;
  height: 2em;
  background-color: #b5d0e1;
}
.skull-wrapper {
  position: absolute;
  bottom: 0;
  left: 260px;
}
.skull-top {
  position: relative;
  background-color: #fad5a1;
  height: 4.5rem;
  width: 5rem;
  border-radius: 40px 40px 10px 10px;
}
.skull-top:after {
  content: "";
  position: absolute;
    width: 50%;
    height: 100%;
    right: 0;
    background-color: rgba(20, 1, 30, 0.15);
  border-radius: 0px 40px 10px 10px;
}
#skull-nose {
  position: absolute;
  bottom: 0;
  left: 35px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 5px 10px 5px;
  border-color: transparent transparent #70414b transparent;
}
#skull-eyes:before {
  position: absolute;
  top: 35px;
  left: 10px;
  content: "";
  width: 20px;
  height: 20px;
  background-color: #70414b;
  border-radius: 50px;
  -webkit-animation: blink 5s infinite;
  animation: blink 5s infinite;
}
#skull-eyes:after {
  position: absolute;
  top: 35px;
  right: 10px;
  content: "";
  width: 20px;
  height: 20px;
  background-color: #70414b;
  border-radius: 50px;
  -webkit-animation: blink 5s infinite;
  animation: blink 5s infinite;
}
.skull-bottom {
  background-color: #fad5a1;
  height: 1rem;
  width: 2.5rem;
  border-radius: 0 0 10px 10px;
  margin: 0 auto;
}
.skull-bottom:after {
  content: "";
  position: absolute;
    width: 50%;
    height: 100%;
    right: 0;
    background-color: rgba(20, 1, 30, 0.15);
  border-radius: 0 0 10px 10px;
}
.witch-wrapper {
  position: absolute;
  bottom: 0;
  left: 200px;
}
.witch-hat-point {
  position: absolute;
  top: -170px;
  left: -30px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 70px 0 0 70px;
  border-color: transparent transparent transparent #70424b;
}
.witch-hat-point:after {
  content: "";
  position: absolute;
  z-index: 1;
  top: -10px;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 0 10px;
  border-color: transparent transparent transparent rgba(20, 1, 30, 0.15);
}
.witch-hat-point:before {
  content: "";
  position: absolute;
  top: -70px;
  left: -100px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 30px 80px 0;
  border-color: transparent #70424b transparent transparent;
}
.witch-hat-top {
  position: absolute;
  top: -100px;
  left: -40px;
  border-bottom: 80px solid #70424b;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  height: 0;
  width: 70px;
}
.witch-hat-top:after {
  content: "";
  position: absolute;
  right: -10px;
  border-bottom: 80px solid rgba(20, 1, 30, 0.15);
  border-left: px solid transparent;
  border-right: 10px solid transparent;
  height: 0;
  width: 10px;
}
.witch-hat-middle {
  position: absolute;
  z-index: -1;
  top: -20px;
  left: -50px;
  border-bottom: 80px solid #5f1e22;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  height: 0;
  width: 90px;
  display: flex;
  justify-content: center;
}
.witch-hat-middle #buckle {
  margin-left: 20px;
  width: 15px;
  height: 40px;
  border-color: #c78056;
  border-style: solid;
  border-width: 5px 4px 5px 5px;
}
.witch-hat-bottom {
  background-color: #70414b;
  height: 7rem;
  width: 10rem;
  border-radius: 60px 50px 0 0;
}
.witch-hat-bottom:before {
  content: "";
  position: absolute;
  bottom: 0;
  left: -169px;
  border-bottom: 105px solid #70424b;
  border-left: 200px solid transparent;
}
.ghoul-wrapper {
  position: absolute;
  bottom: 0;
  left: 50px;
  -webkit-animation: wave 5s infinite; /* Safari 4.0 - 8.0 */
    animation: wave 5s infinite;
}
.ghoul {
  postion: relative;
  border-bottom: 100px solid #49d6c3;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  height: 0;
  width: 25px;
}
.ghoul .hand {
  position: absolute;
  top: -35px;
  left: -24px;
  width: 60px;
  height: 60px;
  border-radius: 60px 60px 80px 60px ;
  background-color: #49d6c3;
}
.ghoul .hand:before {
  content: "";
  position: absolute;
  bottom: -75px;
  right: -5px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 70px 30px;
  border-color: transparent transparent #3db4a1 transparent;
  transform: rotate(-6deg);
}
.ghoul #thumb {
  position: absolute;
  z-index: -2;
  top: -10px;
  left: -35px;
  border-bottom: 50px solid #49d6c3;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  height: 0;
  width: 10px;
  transform: rotate(-90deg);
}
.ghoul #pointer {
  position: absolute;
  z-index: -2;
  top: -54px;
  left: -39px;
  border-bottom: 40px solid #49d6c3;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  height: 0;
  width: 8px;
  transform: rotate(-40deg);
 }
.ghoul #middle {
  position: absolute;
  z-index: -2;
  top: -80px;
  left: -16px;
  border-bottom: 50px solid #49d6c3;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  height: 0;
  width: 8px;
  transform: rotate(-10deg);
}
.ghoul #index {
  position: absolute;
  z-index: -2;
  top: -80px;
  left: 10px;
  border-bottom: 50px solid #3db4a1;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  height: 0;
  width: 7px;
  transform: rotate(5deg);
}
.ghoul #pinky {
  position: absolute;
  z-index: -2;
  top: -60px;
  left: 25px;
  border-bottom: 60px solid #3db4a1;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  height: 0;
  width: 6px;
  transform: rotate(10deg);
}
.ghoul #thumb:after,
.ghoul #pointer:after,
.ghoul #middle:after,
.ghoul #index:after,
.ghoul #pinky:after {
    content: "";
    position: absolute;
    background-color: #ffecc4;
    height: 6px;
    width: 5px;
    left: 2px;
}
.bubbles {
  margin: 0 auto;
  position: absolute;
  z-index: -5;
  bottom: 0;
  left: 10px;
  width: 150px;
  height: 150px;
  background-color: #ffecc4;
  border-radius: 50%;
  box-shadow: -110px 70px 0px -50px #ffecc4,-30px 60px 0 0 #ffecc4, 100px -50px 0 0 #ffecc4, 200px 0px 0 -10px #ffecc4, 300px -20px 0 0 #ffecc4, 400px -100px 0 -30px #ffecc4, 440px -50px 0 -50px #ffecc4, 500px -50px 0 -40px #ffecc4, 490px 30px 0 0 #ffecc4, 575px -60px 0 0 #ffecc4, 650px 0px 0 -50px #ffecc4, 600px 60px 0 0 #ffecc4, 620px 80px 0 0 #ffecc4, -110px 0px 0px -70px #ffecc4, 200px -100px 0px -70px #ffecc4, 220px -90px 0px -65px #ffecc4, 500px -100px 0px -70px #ffecc4, 475px -100px 0px -65px #ffecc4, 700px 30px 0px -60px #ffecc4;
}
.bubbles:before {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 900px;
  height: 100px; 
  background-color: #8e76c4;
}

.shadows {
  position: relative;
}
.shadow:first-child {
  content: "";
  position: absolute;
  left: -75px;
  border-radius: 25px;
  width: 900px;
  height: 40px;
  background-color: #9e84db;
}
.shadow:nth-child(2) {
  content: "";
  position: absolute;
  bottom: -60px;
  left: 150px;
  border-radius: 25px;
  width: 500px;
  height: 20px;
  background-color: #9e84db;
  background-image: radial-gradient(circle at 0,#8e76c4 5%, transparent 0), radial-gradient(circle at 100%,#8e76c4 5%, transparent 0);
}
.shadow:nth-child(3) {
  content: "";
  position: absolute;
  bottom: -90px;
  left: 50px;
  border-radius: 25px;
  width: 700px;
  height: 30px;
  background-color: #9e84db;
}

@keyframes wave {
  0% { transform: rotate(0deg);}
  25% { transform: rotate(5deg);}
  50% { transform: rotate(0deg);}
  75% { transform: rotate(10deg);}
  100% { transform: rotate(0deg);}
}
@keyframes blink {
  0% { transform: scaleY(1); }
  95% { transform: scale(1); }
  100% { transform: scaleY(0); }
}
@keyframes laugh {
  0% { height: 20px; }
  25% { height: 30px; }
  50% { height: 15px; }
  85% { height: 30px; }
  100% { height: 20px; }
}
@keyframes fill{
  0% { height: 20px; }
  30% { height: 40px; }
  90% { height: 20px;}
  100%{ height: 20px;}
}
!

JS 

              
                /* Design source: https://goo.gl/TL8qfb */
!
999px

Console