style.css

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

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(174deg, rgb(245, 180, 137) 50%, crimson 48%, orangered 110%);
}
.box {
  position: relative;
  z-index: 1;
  width: 400px;
  height: 400px;
  backdrop-filter: blur(5px);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.container {
  position: relative;
}
.container::before {
  content: "";
  position: absolute;
  bottom: -100px;
  width: 100%;
  height: 60px;
  background: radial-gradient(rgba(5, 5, 5, 0.15), transparent, transparent);
  border-radius: 50%;
}
.clock {
  position: absolute;
  top: 7px;
  right: 7px;
  bottom: 7px;
  left: 7px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(transparent, rgba(255, 255, 255, 0.15)), url(clock.png);
  background-size: cover;
  backdrop-filter: blur(25px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-bottom: none;
  border-right: none;
  box-shadow: -10px -10px 20px rgba(255, 255, 255, 0.1), 10px 10px 20px rgba(0, 0, 0, 0.1), 0px 40px 50px rgba(0, 0, 0, 0.1);
}
.clock::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background: white;
  border-radius: 50%;
  z-index: 10;
}
.hour,
.min,
.sec {
  position: absolute;
}

.hour,
.hr {
  width: 160px;
  height: 160px;
}
.min,
.mn {
  width: 190px;
  height: 190px;
}
.sec,
.sc {
  width: 230px;
  height: 230px;
}

.hr,.mn,.sc{
  display: flex;
  justify-content: center;
  position: absolute;
  border-radius: 50%;
  /* background-color: gray; */
}

.hr::before{
  content: "";
  position: absolute;
  width: 6px;
  height: 80px;
  z-index: 3;
  border-radius: 6px;
  background: burlywood;
  background: rgba(228, 228, 228, 0.5);
}

.mn::before{
  content: "";
  position: absolute;
  width: 4px;
  height: 100px;
  z-index: 4;
  border-radius: 6px;
  background: white;
}
.sc::before{
  content: "";
  position: absolute;
  width: 2px;
  height: 140px;
  z-index: 5;
  border-radius: 6px;
  background: whitesmoke;
}