<div id="christmas-tree" class="christmas-tree">
  <div class="tree">
    <div class="tree-details"></div>
  </div>
  <div class="lights">
    <div class="row-one"></div>
    <div class="row-two"></div>
  </div>
  <div class="balls"></div>
  <div class="star"></div>
  <div class="shadow"></div>
</div>

body {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background-color: #16323d;
}

.christmas-tree {
  position: relative;
  top:100px;
  cursor: pointer;
}

.tree {
  position: absolute;
  width: 20px;
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;
  border-bottom: 55px solid #823723;
  height:0;
  animation: drop 1s linear;
}

.tree:before {
  content:"";
  position: absolute;
  background-color: #823723;
  border-radius: 50%;
  width: 30px;
  height:10px;
  top:50px;
  left:-5px;
}

.tree:after {
  content:"";
  position: absolute;
  border-right: 75px solid transparent;
  border-left: 75px solid transparent;
  border-bottom: 200px solid #107261;
  width:0;
  height:0;
  top:-180px;
  left:-65px;
}

.tree-details {
  position: absolute;
  width: 150px;
  height: 10px;
  background-color: #107261;
  border-radius: 50%;
  top:15px;
  left:-65px;
  z-index:1;
}

.tree-details:before {
  content:"";
  position: absolute;
  background-color: #0a897c;
  border-radius:50%;
  width: 5px;
  height: 5px;
  top:-10px;
  left:20px;
  box-shadow: 50px -50px #0a897c, 30px -70px #0a897c, 40px -130px #0a897c, 70px -5px #0a897c, 85px -75px #0a897c;
}

.lights {
  position: absolute;
  opacity:0;
  animation: light 2s linear infinite, drop 1s linear .5s forwards;
}

@keyframes light {
  0% {filter: drop-shadow(0 0 2px #fefae0) brightness(1);}
  50% {filter: drop-shadow(0 0 5px #fefae0) brightness(1.35);}
  100% {filter: drop-shadow(0 0 2px #fefae0) brightness(1);}
}

.row-one {
  position: absolute;
  background-color: #e9d8a6;
  border-radius:50%;
  width:10px;
  height:10px;
  top: -120px;
  left: -15px;
  box-shadow: 10px 10px #e9d8a6, 25px 15px #e9d8a6, 40px 18px #e9d8a6, 54px 15px #e9d8a6;
}

.row-two {
  position: absolute;
  background-color: #e9d8a6;
  border-radius:50%;
  width:10px;
  height:10px;
  left:-42px;
  top:-45px;
  box-shadow: 10px 10px #e9d8a6, 25px 17px #e9d8a6, 40px 24px #e9d8a6, 55px 28px #e9d8a6, 70px 30px #e9d8a6, 85px 29px #e9d8a6, 100px 25px #e9d8a6, 112px 20px #e9d8a6;
}

.balls {
  position: absolute;
  background-color: #f34653;
  width:15px;
  height: 15px;
  border-radius:50%;
  z-index:2;
  opacity:0;
  box-shadow: -20px -55px #f34653, 25px -70px #f34653;
  animation: drop 1s linear 1s forwards;
}

.balls:before {
  content:"";
  position: absolute;
  background-color: #f34653;
  width:13px;
  height: 13px;
  border-radius:50%;
  left:-40px;
  top:-10px;
  box-shadow: 100px 10px #f34653, 25px -80px #f34653, 60px -120px #f34653;
}

.balls:after {
  content:"";
  position: absolute;
  background-color: #94d2bd;
  width:10px;
  height: 10px;
  border-radius:50%;
  top:-40px;
  left:40px;
  box-shadow: -35px -35px #94d2bd, -35px -105px #94d2bd, -60px 45px #94d2bd;
}

.star {
  position: absolute;
  display: block;
  width: 0px;
  height: 0px;
  border-right: 25px solid transparent;
  border-bottom: 17.5px solid #f9c819;
  border-left: 25px solid transparent;
  transform: rotate(-35deg);
  top:-190px;
  left:-9px;
  opacity:0;
  animation: dropStar 1s linear 1.5s forwards;
    }

.star:before {
      border-bottom: 20px solid #f9c819;
      border-left: 7.5px solid transparent;
      border-right: 7.5px solid transparent;
      position: absolute;
      height: 0;
      width: 0;
      top: -12.5px;
      left: -17.5px;
      display: block;
      content: '';
      transform: rotate(-35deg);
    }

.star:after {
      position: absolute;
      display: block;
      top: 0.75px;
      left: -26.25px;
      width: 0px;
      height: 0px;
      border-right: 25px solid transparent;
      border-bottom: 17.5px solid #f9c819;
      border-left: 25px solid transparent;
      transform: rotate(-70deg);
      content: '';
    }
   
    @keyframes drop {
  0% {transform: translateY(-470px) scaleY(0.9); opacity: 0;}
  5% {opacity: 1;}
  50% {transform: translateY(0px) scaleY(1); opacity: 1;}
  65% {transform: translateY(-15px) scaleY(0.9); opacity: 1;}
  75% {transform: translateY(-18px) scaleY(0.9); opacity: 1;}
  100% {transform: translateY(0px) scaleY(1); opacity: 1;}
}

   @keyframes dropStar {
  0% {transform: translateY(-470px) scaleY(0.9) rotate(-35deg); opacity: 0;}
  5% {opacity: 1;}
  50% {transform: translateY(0px) scaleY(1) rotate(-35deg); opacity: 1;}
  65% {transform: translateY(-15px) scaleY(0.9) rotate(-35deg); opacity: 1;}
  75% {transform: translateY(-18px) scaleY(0.9) rotate(-35deg); opacity: 1;}
  100% {transform: translateY(0px) scaleY(1) rotate(-35deg); opacity: 1;}
  100% {transform: translateY(0px) scaleY(1) rotate(-35deg); opacity: 1;}
}

.shadow {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(0,0,0,0.7);
  width: 50px;
  height: 20px;
  z-index:-1;
  top:50px;
  left:-10px;
  animation: scale .5s linear forwards;
}

@keyframes scale {
  0% {transform: scaleX(1);}
  100% {transform: scaleX(3);}
}

// click on the tree to see the animation again. 

$(document).ready(function(){
  $('#christmas-tree').mouseleave(function(){
    $(this).removeClass('clicked');
  }).click(function(){
    $(this).addClass('clicked').html($(this).html());
  });
});