*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body{
  /* background: linear-gradient(0.25turn, #3f87a6, #f8e1e1, #f6f33c); */
  background-color: #000;
  display: flex;
}
.clock{
  width: 30em;
  height: 30em;
  border-radius: 50%;
  border: 30px double #000;
  margin: 4em auto;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1),
  inset 0 0 0 3px #EFEFEF,
  inset 0 0 10px black,
  0 0 10px rgba(0,0,0,0.2);
}
.clock-face{
  position: relative;
  width: 100%;
  height: 100%;
  transform: translate(20px,-5px);
}
.clock-face::after{
  content: '';
  position: absolute;
  top: -3px;
  left: 183px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: rgb(255, 255, 255);
  margin:50% auto;
}
.hand{
  width: 12em;
  height: .5em;
  background-color: #fff;
  position: absolute;
  top: 50%;
  transform-origin: 100%;
  transform: rotate(90deg);
  transition: all 0.05s ease-in-out;
}