body {
    font-size: 15pt;
    background-color: black;
}
#clock{
  position: relative;
 /* border: 2px solid red;*/
  margin: auto ;
  height: 90vw;
  width: 90vw;
  background: url(png-clipart-clock-position-clock-face-digital-clock-clock.png) no-repeat;
  background-size: 100%;
}
#hr, #min, #sec{
  position: absolute;
  background: black;
  border-radius :10px ;
  transform-origin:bottom;
  
}
#hr{
  width: 1.8%;
  height: 20%;
  top: 22.6%;
  left: 49.5%;
  opacity: 0.8;
 /* display: none ;*/
} 
#min{
  width: 1.6%;
  height: 26%;
  top: 16.5%;
  left: 49.5%;
  opacity: 0.8;
  
 /* display: none;*/
}
#sec{
  width: 1.2%;
  height: 31%;
  top: 11.5%;
  left: 49.6%;
  opacity: 0.8;
  -ms-transform-origin: bottom;
 /* display: none;*/
}