style.css

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

svg {
  max-width: 100%;
}

#left-wheel,
#right-wheel {
  transform-origin: center;
  transform-box: fill-box;
  animation: rotateWheel 2s linear infinite;
}

#man-bike {
  transform-origin: bottom;
  transform-box: fill-box;
  animation: rideBike 1s ease-in-out infinite alternate;
}

#hat {
  transform-origin: bottom;
  transform-box: fill-box;
  animation: moveHat 1s ease-in-out infinite alternate;
}

@keyframes rotateWheel {
  from {
    transform: rotateZ(0deg);
  }
  to {
    transform: rotateZ(360deg);
  }
}

@keyframes rideBike {
  from {
    transform: rotateX(0deg);
  }
  to {
    transform: rotateX(20deg);
  }
}

@keyframes moveHat {
  from {
    transform: translateY(0) rotateZ(0deg);
  }
  to {
    transform: translateY(20%) rotateZ(10deg);
  }
}