body{
 display: flex;
 justify-content: center;
 align-items: center;
 background-color: #001933;
 color:#fff;
}

.container {
  width:75px;
  height:275px;
  position:absolute;
  top:0;
  animation:bulb-swing 3s infinite ease-in-out;
  transform-origin: top center;
}

.bulb {
  z-index:10;
  display:block;
  width:75px;
  height:75px;
  border-radius:50%;
  position:absolute;
  top:200px;
  cursor:pointer;
  background-color:#FFD700;
  box-shadow: 
    5px 5px 80px gold,
    5px -5px 80px gold, 
    -5px 5px 80px gold,
    -5px -5px 80px gold;
}

.bulb::before {
  content:"";
  position:absolute;
  width:35px;
  height:50px;
  background-color:#000;
  bottom:100%;
  left:calc(50% - (35px / 2));
  border-top-left-radius:10px;
  border-top-right-radius:10px;
  z-index:-1;
}

.bulb::after {
  content:"";
  position:absolute;
  width:10px;
  height:250px;
  background-color:#000;
  bottom:100%;
  left:calc(50% - (10px / 2));
  z-index:-1;
}

.bulb.off {
  background:transparent;
  box-shadow: none;
  border:2px solid #000;
}

.filaments {
  display:block;
  position:absolute;
  width:2px;
  height:30px; 
  background-color:#000;
  top:2px;
  left:28px;
  box-shadow:17px 0 #000;
  opacity:0;
}

.filaments::after {
  content:"";
  display:block;
  width:2px;
  height:12px;
  background-color:#000;
  box-shadow:4.5px 0 #000, 9px 0 #000;
  position:absolute;
  bottom:-1px;
  left:4px;
}

.filaments.off {
  opacity:1;
}

@keyframes bulb-swing {
  0% {
    transform: rotate(-10deg);
  }
  50% {
    transform: rotate(10deg);
  }
  100% {
    transform: rotate(-10deg);
  }
}

.floor {
  position:absolute;
  background-color: #000c19;
  height:200px;
  width:100%;
  bottom:0;
  left:0;
}

.shadow {
  position:absolute;
  width:50px;
  height:50px;
  background-color:#524c11;
  border-radius:50%;
  box-shadow: 
    20px 20px 100px gold,
    -20px 20px 100px gold,
    20px -20px 100px gold,
    -20px -20px 100px gold;
  top:calc(50% - (50px / 2));
  left:calc(50% - (50px / 2));
  animation:shadow-swing 3s infinite ease-in-out;
}

.shadow.off {
  background-color: #000c19;
  box-shadow:none;
}

@keyframes shadow-swing {
  0% {
    transform: translateX(100px);
  }
  50% {
    transform: translateX(-100px);
  }
  100% {
    transform: translateX(100px);
  }
}