style.css

    html {
      /* background: #018DED url(https://unsplash.it/1500/1000?image=881&blur=5);*/
      background-color: #018DED;
      background-size: cover;
      font-family: 'helvetica neue';
      text-align: center;
      font-size: 10px;
    }

    body {
      margin: 0;
      font-size: 2rem;
      display: flex;
      flex: 1;
      min-height: 100vh;
      align-items: center;
    }

    .clock {
      width: 30rem;
      height: 30rem;
      border: 20px solid white;
      border-radius: 50%;
      margin: 50px auto;
      position: relative;
      padding: 2rem;
      box-shadow:
        0 0 0 4px rgba(0,0,0,0.1),
        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: translateY(-3px); */ /* account for the height of the clock hands */
    }

    .hand {
      width: 50%;
      height: 6px;
      background: green;
      position: absolute;
      top: 50%;
      transform-origin: 100% 50%;
      transform: rotate(90deg);
      transition: all 0.05s linear;
      border-radius: 30% 0 0 30%;
    }

    .hour-hand {
      height: 10px;
      margin-top: -5px;
      transform-origin: 100% 50%;
      transition: all 1s linear;
      transform: scaleX(0.8);
    }

    .second-hand {
      background-color: red;
      transition: all 0.05s cubic-bezier(0.25, 0.1, 0.84, 2.82); /* tick */
    }