Time-Service/page/css/clock.css

body,
html {
  height: 100vh;
  width: 100vw;
  user-select: none;
}

.clock {
  width: 800px;
  margin: 0 auto;
  padding: 30px;
  color: #fff;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  overflow: hidden;
  z-index: 10;
  opacity: 0;
  animation-name: show;
  animation-duration: 3s;
  animation-fill-mode: forwards;
  pointer-events: none;
}

#date {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 36px;
  text-align: center;
  text-shadow: 0 0 5px #00c6ff;

}

ul {
  width: 800px;
  margin: 0 auto;
  padding: 0px;
  list-style: none;
  text-align: center;
}

ul li {
  display: inline;
  font-size: 10em;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  text-shadow: 0 0 5px #00c6ff;
}

.point {
  position: relative;
  padding-left: 10px;
  padding-right: 10px;
  animation: flash 1s ease infinite;
  top: -11px;
  opacity: 0;
}

@keyframes flash {
  0% {
    opacity: 0;
    text-shadow: none;
  }

  50% {
    opacity: 1.0;
    text-shadow: 0 0 20px #00c6ff;
  }

  100% {
    opacity: 0;
    text-shadow: none;
  }
}

@keyframes show {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}