Exhaust Fan | Learning Axis

HTML

CSS

body {
  margin: 0;
  background: #111;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  font-family: sans-serif;
}
.fan-box {
  width: 200px;
  height: 200px;
  background: #2a2a2a;
  border-radius: 50%;
  box-shadow: inset 0 0 15px #000, 0 0 30px #000;
  position: relative;
  overflow: hidden;
}
.fan-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  background: #777;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  box-shadow: 0 0 2px #000 inset;
}
.blades {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  transform-origin: center;
  transform: translate(-50%, -50%);
}
.blade {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: center;
}
.blade::before {
  content: '';
  display: block;
  width: 80px;
  height: 30px;
  background: radial-gradient(#aaa, #444);
  border-radius: 100% 0 100% 0;
  transform: rotate(45deg);
  transform-origin: right center;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.6);
}
.blade:nth-child(1) { transform: rotate(0deg); }
.blade:nth-child(2) { transform: rotate(120deg); }
.blade:nth-child(3) { transform: rotate(240deg); }
.grill {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 95%;
  height: 95%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.07);
  pointer-events: none;
}
.toggle-btn {
  margin-top: 20px;
  padding: 10px 25px;
  border: none;
  border-radius: 5px;
  background: #444;
  color: white;
  font-size: 16px;
  cursor: pointer;
}
.toggle-btn:hover {
  background: #666;
}