html {
  background-color: #193549;
  background: url(https://source.unsplash.com/eye_wxrKXf0/) no-repeat top;
  background-size: cover;
  font-size: 16px;
  font-family: sans-serif;
}

body {
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.clock {
  width: 65vw;
  height: 65vw;
  border: 1rem solid #fff;
  border-radius: 50%;
  background-color: #ffffff5c;
  padding: 1rem;
  margin-top: 50px;
  margin-inline: auto;
  position: relative;
}

.clock-face {
  height: 100%;
  width: 100%;
  position: relative;
  transform: translateY(-3px);
}

.hand {
  background: #000;
  position: absolute;
  width: 6px;
  height: 50%;
  left: 50%;
  border-radius: 10px;
  transform-origin: bottom;
  transition: all 0.05s;
  transition-timing-function: cubic-bezier(0.1, 2.7, 0.58, 1);
}

.hour-hand {
  height: 40%;
  top: 10%;
}

.second-hand {
  width: 3px;
}

.no-transition {
  transition: none;
}

@media only screen and (min-width: 640px) {
  .clock {
    width: 15rem;
    height: 15rem;
  }
}