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(45deg, #e91e61, #e91e63 50%, #ffc107 50%, #ffc107);
}
body::after {
  content: '';
  position: absolute;
  top: -20px;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #03a9f4, #03a9f4 50%, transparent 50%, transparent);
  animation: animate 5s ease-in-out infinite;
}
@keyframes animate {
  0%,
  100% {
    transform: translateY(10px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.container {
  position: relative;
}
.container::before {
  content: '';
  position: absolute;
  bottom: -120px;
  width: 100%;
  height: 60px;
  background: radial-gradient(rgba(0, 0, 0, 0.2), transparent, transparent);
  border-radius: 50%;
}
.box {
  position: relative;
  width: 400px;
  height: 400px;
  backdrop-filter: blur(25px);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.5);
  animation: animate 5s ease-in-out infinite;
  animation-delay: -2.5s;
  z-index: 1;
}
.clock {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  background: radial-gradient(transparent, rgba(255, 255, 255, 0.2)), url('./img/clock.png');
  background-size: cover;
  border-radius: 50%;
  backdrop-filter: blur(25px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  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, 0.2);
}
.clock::before {
  content: '';
  position: absolute;
  width: 15px;
  height: 15px;
  background-color: #fff;
  border-radius: 50%;
  z-index: 10000;
}
.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%;
}
.hr::before{
  content: "";
  position: absolute;
  width: 8px;
  height: 80px;
  background-color: #ff105e;
  border-radius: 6px;
  z-index: 11;
}
.mn::before{
  content: "";
  position: absolute;
  width: 4px;
  height: 90px;
  background-color: #fff;
  border-radius: 6px;
  z-index: 12;
}
.sc::before{
  content: "";
  position: absolute;
  width: 2px;
  height: 150px;
  background-color: rgb(39, 123, 233);
  border-radius: 6px;
  z-index: 13;
}