html {
    box-sizing: border-box;
    background-color: #2d3748;
  }
  
  .flipclock {
    display: flex;
    justify-content: center;
    padding: 40px;
    box-sizing: border-box;
  }
  
  .flipclock * {
    box-sizing: inherit;
  }
  
  .leaf {
    display: flex;
    flex-direction: column;
    margin: 0 10px;
    perspective: 300px;
  }
  
  .leaf::after {
    content: attr(data-label);
    position: absolute;
    top: 100%;
    left: 50%;
    margin-top: 8px;
    transform: translateX(-50%);
    color: #f2f2f2;
    font-size: 14px;
    font-weight: 400;
    text-transform: uppercase;
    opacity: 0.5;
  }
  
  .top1,
  .bottom,
  .leaf-front,
  .leaf-back {
      position: relative;
      display: block;
      height: 64px;
      width: 120px;
      background-color: #08080840;
      color: #ffffff;
      overflow: hidden;
      border-color: #2d3748;
  }
  .top1 span,
  .bottom span,
  .leaf-front span,
  .leaf-back span {
    position: absolute;
    left: 50%;
    width: 100%;
    height: 128px;
    text-align: center;
    font-family: "Impact", sans serif;
    font-size: 80px;
    line-height: 128px;
    transform: translateX(-50%);
  }
  
  .leaf._3-digits .top1,
  .leaf._3-digits .bottom,
  .leaf._3-digits .leaf-front,
  .leaf._3-digits .leaf-back {
    width: 148px;
  }
  
  .leaf .bottom {
      background-color: #c5c5c54a;
  }
  
  .top1,
  .leaf-front {
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    margin-bottom: 1px;
    border-bottom-style: solid;
    border-bottom-width: 1px;
  }
  .top1 span,
  .leaf-front span {
    top: 0;
  }
  
  .leaf-front {
    position: absolute;
    z-index: 10;
  }
  
  .bottom,
  .leaf-back {
    border-bottom-left-radius: 6px;
    border-bottom-right-radius: 6px;
    border-top-style: solid;
    border-top-width: 1px;
  }
  .bottom span,
  .leaf-back span {
    bottom: 0;
  }
  
  .leaf-back {
    position: absolute;
    top: 64px;
    z-index: 10;
  }
  
  @media screen and (max-width: 600px) {
    .flipclock {
      padding: 6.6666666667vw;
    }
  
    .leaf {
      margin: 0 0.6666666667vw;
    }
  
    .leaf::after {
      margin-top: 1.3333333333vw;
      font-size: 2.3333333333vw;
    }
  
    .top1,
    .bottom,
    .leaf-front,
    .leaf-back {
      height: 10.6666666667vw;
      width: 20vw;
    }
    .top1 span,
    .bottom span,
    .leaf-front span,
    .leaf-back span {
      height: 21.3333333333vw;
      font-size: 13.3333333333vw;
      line-height: 21.3333333333vw;
    }
  
    .leaf._3-digits .top1,
    .leaf._3-digits .bottom,
    .leaf._3-digits .leaf-front,
    .leaf._3-digits .leaf-back {
      width: 24.6666666667vw;
    }
  
    .top1,
    .leaf-front {
      border-top-left-radius: 1vw;
      border-top-right-radius: 1vw;
    }
  
    .bottom,
    .leaf-back {
      border-bottom-left-radius: 1vw;
      border-bottom-right-radius: 1vw;
    }
  
    .leaf-back {
      top: 10.6666666667vw;
    }
  }
  .leaf-front {
    transform-origin: bottom center;
    transform: rotateX(0deg);
    transform-style: preserve-3d;
    transition-delay: 0.3s;
  }
  
  .leaf-back {
    transform-origin: top center;
    transform: rotateX(90deg);
    transform-style: preserve-3d;
    transition-delay: 0s;
  }
  
  .bottom::before {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: black;
    background: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.8) 0%,
      rgba(0, 0, 0, 0) 100%
    );
    filter: blur(10px);
  }
  
  .flip .leaf-front {
    transform: rotateX(-90deg);
    transition: transform 0.3s ease-in, background-color 0.3s ease-in,
      color 0.3s ease-in;
    transition-delay: 0s;
    color: black;
    background-color: #737373;
  }
  .flip .leaf-back {
    transform: rotateX(0deg);
    transition: transform 0.3s ease-in, background-color 0.3s ease-in,
      color 0.3s ease-in;
    transition-delay: 0.3s;
  }
  .flip .bottom::before {
    transition: height 0.3s ease-in-out;
    transition-delay: 0.15s;
    height: 100%;
  }