<div class="bulb">
  <div class="rounded1"></div>
  <div class="rounded2"></div>
    <div class="filament1">
    </div>
    <div class="filament2"></div>
  <div class="base">
    <div class="cable"></div>
  </div>
</div>

* {
  margin: 0;
}

body {
  background: radial-gradient(#444, #222);
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100vh;
  align-items: center;
  justify-content: center;
  transition:all .2s;
}

.bulb {
  cursor: pointer;
  width: 10vw;
  height: 10vw;
  background: #666;
  border-radius: 50%;
  position: relative;
  transition: all 0.2s;
}

.bulb:active {
  transform: translateY(1vw);
}

.bulb::after {
  content: "";
  width: 2vw;
  height: 2vw;
  bottom: 1.5vw;
  right: 1.5vw;
  position: absolute;
  background: transparent;
  border-radius: 0 0 5vw;
  border-right: 1vw solid rgba(255, 255, 255, 0.1);
  border-bottom: 1vw solid rgba(255, 255, 255, 0.1);
}

.base {
  position: absolute;
  width: 4vw;
  height: 3.5vw;
  background: #666;
  top: -5vw;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 1vw 1vw 0 0;
  z-index: 2;
}

.base::before,
.base::after {
  content: "";
  position: absolute;
  width: 4.5vw;
  height: 0.5vw;
  background: #222;
  border-radius: 0.5vw;
  left: -0.25vw;
}

.base::before {
  top: 1vw;
}

.base::after {
  top: 2vw;
}

.rounded1,
.rounded2 {
  position: absolute;
  width: 3vw;
  height: 3vw;
  top: -2vw;
  border-bottom-right-radius: 3vw;
  background: transparent;
  box-shadow: 2vw 2vw 0 1vw #666;
  z-index: 1;
  transition: all 0.2s;
}

.rounded1 {
  left: 0.5vw;
  transform: rotate(-25deg);
}

.rounded2 {
  right: 0.5vw;
  transform: rotate(115deg);
}

.cable {
  background: #666;
  width: 2vw;
  position: absolute;
  height: 0.5vw;
  top: -0.5vw;
  left: 1vw;
  border-radius: 0.2vw 0.2vw 0 0;
}

.cable::before {
  content: "";
  background: #222;
  width: 0.5vw;
  position: absolute;
  bottom: 0.5vw;
  left: 50%;
  transform: translateX(-50%);
  height: 50vh;
}

.filament1, .filament2{
  position: absolute;
  background: #888;
  width: 4.5vw;
  height: 0.2vw;
  top: -0.5vw;
  border-radius: 0.5vw;
  z-index: 1;
  transition: all 0.2s;
  
}

.filament1 {
  left: 2vw;
  transform: rotate(-75deg);
}

.filament2 {
  right: 2vw;
  transform: rotate(75deg);
}

/* switch light on */
.light-body {
  background: radial-gradient(#f6e58d, #f9ca24);
}

.light-bulb {
  background: #f9ca24;
}

.light-rounded {
  box-shadow: 2vw 2vw 0 1vw #f9ca24;
}

.dark-filament {
  background: #222;
}

let body = document.querySelector("body"),
  bulb = document.querySelector(".bulb"),
  rounded1 = document.querySelector(".rounded1"),
  rounded2 = document.querySelector(".rounded2"),
  filament1 = document.querySelector(".filament1"),
  filament2 = document.querySelector(".filament2");

bulb.addEventListener("click", function () {
  body.classList.toggle("light-body");
  bulb.classList.toggle("light-bulb");
  rounded1.classList.toggle("light-rounded");
  rounded2.classList.toggle("light-rounded");
  filament1.classList.toggle("dark-filament");
  filament2.classList.toggle("dark-filament");
});