#clockContainer {
  position: relative;
  margin: auto;
  height: 50vw;
  width: 50vw;
  background: url(clock.png) no-repeat;
  background-size: 100%;
}

#hour,
#minute,
#second {
  position: absolute;
  background: black;
  border-radius: 10px;
}
#hour {
  width: 1.8%;
  height: 25%;
  top: 24%;
  left: 49%;
  transform-origin: bottom;
}
#minute {
  width: 1.4%;
  height: 30%;
  top: 18%;
  left: 49%;
  opacity: 0.8;
  transform-origin: bottom;
}
#second {
  width: 1%;
  height: 33%;
  top: 15%;
  left: 49%;
  opacity: 0.8;
  transform-origin: bottom;
}