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HTML 

              
                <div class="main">
  <div class="sun"></div>
  <div class="snowman">
    <div class="top-hat">
      <div class="round-top"></div>
      <div class="hat-body-top"></div>
      <div class="hat-body-bottom">
        <div class="rounded-bottom"></div>
      </div>
      <div class="brim"></div>
    </div>
    <div class="snowman-head">
      <div class="left-eye"></div>
      <div class="right-eye"></div>
      <div class="carrot-nose"></div>
      <div class="coal-mouth coal-1"></div>
      <div class="coal-mouth coal-2"></div>
      <div class="coal-mouth coal-3"></div>
      <div class="coal-mouth coal-4"></div>
      <div class="coal-mouth coal-5"></div>
    </div>
    <div class="scarf">
      <div class="scarf-top"></div>
      <div class="left-side"></div>
      <div class="left-shadow"></div>
      <div class="left-bottom-shadow"></div>
      <div class="left-fringe">
        <div class="tassel tassel-1"></div>
        <div class="tassel tassel-2"></div>
        <div class="tassel tassel-3"></div>
        <div class="tassel tassel-4"></div>
        <div class="tassel tassel-5"></div>
        <div class="tassel tassel-6"></div>
        <div class="tassel tassel-7"></div>
        <div class="tassel tassel-8"></div>
      </div>
      <div class="right-side"></div>
      <div class="right-shadow"></div>
      <div class="right-bottom-shadow"></div>
      <div class="right-fringe">
        <div class="tassel tassel-1"></div>
        <div class="tassel tassel-2"></div>
        <div class="tassel tassel-3"></div>
        <div class="tassel tassel-4"></div>
        <div class="tassel tassel-5"></div>
        <div class="tassel tassel-6"></div>
        <div class="tassel tassel-7"></div>
      </div>
    </div>
    <div class="snowman-middle">
      <div class="coal-button button-1"></div>
      <div class="coal-button button-2"></div>
      <div class="coal-button button-3"></div>
    </div>
    <div class="snowman-bottom"></div>
  </div>
  <div class="branch-arms left-arm">
    <div class="arm-base"></div>
    <div class="arm-top"></div>
    <div class="finger-branch branch-left"></div>
    <div class="finger-branch branch-top"></div>
  </div>
  <div class="branch-arms right-arm">
    <div class="arm-base"></div>
    <div class="arm-top"></div>
    <div class="finger-branch branch-left"></div>
    <div class="finger-branch branch-top"></div>
  </div>
  <div class="snow"></div>
  <div class="snowfall"></div>
</div>
!

CSS 

              
                .main {
  position: relative;
  display: block;
  margin: auto;
  width: 600px;
  height: 750px;
  background: radial-gradient(transparent 75%, #05426f 100%),
    linear-gradient(
      135deg,
      #91a5a6,
      #8a9b8b,
      #8dabab,
      #889a80,
      #6d969c,
      #477e92,
      #518998
    );
}

.sun {
  position: absolute;
  height: 14%;
  width: 18%;
  top: 20%;
  right: 15%;
  background: radial-gradient(#ecc56b, #e4ddb7);
  box-shadow: 0 0 60px 20px #e4ddb7;
  border-radius: 50%;
}

.snowman {
  position: absolute;
  height: 80%;
  width: 70%;
  top: 15%;
  left: 15%;
}

.top-hat {
  position: absolute;
  height: 30%;
  width: 30%;
  left: 36%;
}

.round-top {
  position: absolute;
  width: 60%;
  height: 10%;
  left: 20%;
  top: 5%;
  border-radius: 50%;
  background: radial-gradient(ellipse at top left, #9b9d8f, #667177, black);
  z-index: 10;
}

.hat-body-top {
  position: absolute;
  height: 38%;
  width: 60%;
  left: 20%;
  top: 10%;
  background: linear-gradient(
    to right,
    #364e4e,
    #3a494e,
    #32454c,
    #59646a,
    #7d848a,
    #919284,
    #6e7d7a
  );
  border-bottom: 3px solid black;
  border-bottom-left-radius: 20%;
  border-bottom-right-radius: 20%;
  z-index: 9;
}

.hat-body-bottom {
  position: absolute;
  width: 60%;
  height: 33%;
  left: 20%;
  top: 36%;
  background: linear-gradient(
    to right,
    #630408,
    #500106,
    #2f0304,
    #820f14,
    #9e1723,
    #af2228,
    #992d3a
  );
  z-index: 8;
}

.rounded-bottom {
  position: absolute;
  width: 100%;
  height: 30%;
  top: 90%;
  background: linear-gradient(
    to right,
    #630408,
    #500106,
    #2f0304,
    #820f14,
    #9e1723,
    #af2228,
    #992d3a
  );
  border-bottom: 3px solid black;
  border-bottom-left-radius: 50%;
  border-bottom-right-radius: 50%;
  z-index: 7;
}

.brim {
  position: absolute;
  width: 110%;
  height: 24%;
  top: 68%;
  left: -5%;
  background: radial-gradient(
    ellipse at top left,
    #6f6e76,
    #918593,
    #889395,
    #6c7981,
    #3e5054,
    #3f333d,
    #707068
  );
  border-radius: 50%;
  z-index: 6;
}

.snowman-head {
  position: absolute;
  width: 33%;
  height: 21%;
  left: 34%;
  top: 22%;
  border-radius: 50%;
  border-left: 3px solid #b9b4a5;
  border-right: 3px solid #d4d4d4;
  background: radial-gradient(
    ellipse at top left,
    #96afa8,
    #7d9798,
    #8babba,
    #a9b5c3,
    #c6c7c9,
    #c6c7c9,
    #c0cccc
  );
  z-index: 5;
}

.left-eye {
  position: absolute;
  top: 38%;
  left: 35%;
  width: 10%;
  height: 13%;
  border-radius: 50%;
  background: radial-gradient(circle at top left, gray, black);
}

.right-eye {
  position: absolute;
  top: 37%;
  left: 60%;
  width: 10%;
  height: 13%;
  border-radius: 50%;
  background: radial-gradient(circle at top left, gray, black);
}

.carrot-nose {
  position: absolute;
  width: 10%;
  height: 45%;
  top: 35%;
  left: 63%;
  border-radius: 50% 50% 50% 50% / 70% 70% 10% 10%;
  background: linear-gradient(to right, #eab4a7, #ca7f68, #b94b34);
  transform: rotate(76deg);
}

.coal-mouth {
  position: absolute;
  width: 8%;
  height: 10%;
  border-radius: 50%;
  background: radial-gradient(circle at top left, gray, black);
}

.coal-1 {
  top: 79%;
  left: 51%;
}

.coal-2 {
  top: 78%;
  left: 39%;
}

.coal-3 {
  top: 71%;
  left: 27%;
}

.coal-4 {
  top: 78%;
  left: 63%;
}

.coal-5 {
  top: 71%;
  left: 75%;
}

.scarf {
  position: absolute;
  width: 44%;
  height: 38%;
  left: 30%;
  top: 40%;
  z-index: 4;
}

.scarf-top {
  position: absolute;
  width: 76%;
  height: 32%;
  left: 11%;
  top: -8%;
  border-radius: 50%;
  background: linear-gradient(#d3d3b5, #c73f44, #8c0d0f);
  z-index: 2;
}

.left-side {
  position: absolute;
  width: 20%;
  height: 40%;
  top: -21%;
  left: 13%;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 180px solid #ab1a27;
  border-radius: 5px;
}

.left-shadow {
  position: absolute;
  width: 11%;
  height: 1%;
  top: 20%;
  left: 26%;
  background: transparent;
  box-shadow: 0 0 40px 8px;
}

.left-bottom-shadow {
  position: absolute;
  width: 31%;
  height: 0;
  top: 96%;
  left: 16%;
  background: transparent;
  box-shadow: 0 0 20px 1px;
}

.left-fringe {
  position: absolute;
  width: 35%;
  height: 15%;
  top: 97%;
  left: 12%;
}

.right-fringe {
  position: absolute;
  width: 35%;
  height: 15%;
  top: 92%;
  left: 50%;
}

.tassel {
  position: absolute;
  width: 25%;
  border-radius: 50%;
  background: transparent;
  border-left: 3px solid #cdcdcf;
}

.tassel-1 {
  height: 70%;
}

.tassel-2 {
  height: 60%;
  left: 13%;
}

.tassel-3 {
  height: 70%;
  left: 26%;
}

.tassel-4 {
  height: 40%;
  left: 39%;
}

.tassel-5 {
  height: 60%;
  left: 52%;
}

.tassel-6 {
  height: 70%;
  left: 65%;
}

.tassel-7 {
  height: 40%;
  left: 78%;
}

.tassel-8 {
  height: 50%;
  left: 91%;
}

.right-side {
  position: absolute;
  width: 15%;
  height: 35%;
  top: -21%;
  left: 50%;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 180px solid #ab1a27;
  border-radius: 5px;
}

.right-shadow {
  position: absolute;
  width: 7%;
  height: 1%;
  top: 20%;
  left: 62%;
  background: transparent;
  box-shadow: 0 0 40px 8px;
}

.right-bottom-shadow {
  position: absolute;
  width: 30%;
  height: 0;
  top: 92%;
  left: 50%;
  background: transparent;
  box-shadow: 0 0 14px 1px;
}

.snowman-middle {
  position: absolute;
  width: 41%;
  height: 26%;
  left: 31%;
  top: 42%;
  border-radius: 50%;
  border-left: 3px solid #b9b4a5;
  border-right: 3px solid #d4d4d4;
  background: radial-gradient(
    ellipse at top left,
    #96afa8,
    #7d9798,
    #8babba,
    #a9b5c3,
    #c6c7c9,
    #c6c7c9,
    #c0cccc
  );
  z-index: 3;
}

.coal-button {
  position: absolute;
  width: 8%;
  height: 11%;
  left: 46%;
  border-radius: 50%;
  background: radial-gradient(circle at top left, gray, black);
}

.button-1 {
  top: 38%;
}

.button-2 {
  top: 56%;
}

.button-3 {
  top: 74%;
}

.snowman-bottom {
  position: absolute;
  width: 71%;
  height: 42%;
  left: 16%;
  top: 58%;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  border-left: 3px solid #b9b4a5;
  border-right: 3px solid #d4d4d4;
  background: radial-gradient(
    ellipse at top left,
    #96afa8,
    #7d9798,
    #8babba,
    #a9b5c3,
    #c6c7c9,
    #c6c7c9,
    #c0cccc
  );
  z-index: 2;
}

.branch-arms {
  position: absolute;
  top: 27%;
  width: 30%;
  height: 40%;
  z-index: 6;
}

.left-arm {
  left: 8%;
}

.right-arm {
  left: 65%;
  transform: scaleX(-1);
}

.arm-base {
  position: absolute;
  width: 10%;
  height: 30%;
  top: 50%;
  left: 77%;
  border-radius: 50% 50% 50% 50% / 40% 50% 10% 10%;
  border-left: 8px solid #6f3316;
  transform: rotate(-45deg);
}

.arm-top {
  position: absolute;
  width: 10%;
  height: 20%;
  top: 40%;
  left: 63%;
  border-radius: 50% 50% 50% 50% / 40% 50% 10% 10%;
  border-left: 6px solid #6f3316;
  transform: rotate(-15deg);
}

.finger-branch {
  position: absolute;
  width: 10%;
  height: 9%;
  border-radius: 50% 50% 50% 50% / 40% 0% 10% 100%;
  border-left: 4px solid #6f3316;
}

.branch-left {
  top: 45%;
  left: 56%;
  transform: rotate(-50deg);
}

.branch-top {
  top: 41%;
  left: 59%;
  transform: rotate(210deg);
}

.snow {
  position: absolute;
  width: 100%;
  height: 18%;
  background: radial-gradient(
    ellipse at top,
    #cdcdcf,
    #a7bac6,
    #528b9d,
    #3b6c89
  );
  bottom: 0;
  opacity: 0.75;
}

.snowfall {
  position: absolute;
  height: 100%;
  width: 100%;
  background: url("https://user-images.githubusercontent.com/7342669/50293046-ab4ed880-0440-11e9-8537-8a0e70729b34.png"),
    url("https://user-images.githubusercontent.com/7342669/50293049-ad189c00-0440-11e9-8cae-a57ad65c22ca.png"),
    url("https://user-images.githubusercontent.com/7342669/50294834-c58ab580-0444-11e9-84b6-186b19edf94d.png");
  animation: letItSnow 20s linear infinite;
  z-index: 11;
}

@keyframes letItSnow {
  0% {
    background-position: 0px 0px;
  }
  100% {
    background-position: 500px 1000px, 400px 400px, 300px;
  }
}
!

JS
!
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