:root {
    --color1: #ffffff;
    --color2: #d9d9d9;
    --flip-duration: .3s;
  }
  
  .digit-flipper {
    display: inline-block;
    height: 0.98em;
    //font-size: 20vmin;
    font-size: 6vmin;
    line-height: 1;
    margin: 0 0.02em;
    -webkit-perspective: 300px;
            perspective: 300px;
    position: relative;
    width: 0.65em;
  }
  
  .digit-flipper__digit {
    display: block;
    height: 100%;
    position: absolute;
    text-align: center;
    width: 100%;
  }
  
  .digit-flipper__digit-top,
  .digit-flipper__digit-bottom {
    color: black;
    display: block;
    height: 100%;
    position: absolute;
    -webkit-transform-origin: 50% 50%;
            transform-origin: 50% 50%;
    width: 100%;
  }
  
  .digit-flipper__digit-top {
    background-color: var(--color1);
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    -webkit-clip-path: inset(0 0 51% 0);
            clip-path: inset(0 0 51% 0);
    overflow: hidden;
    -webkit-transform: rotateX(0deg);
            transform: rotateX(0deg);
  }
  
  .digit-flipper__digit-bottom {
    background-color: var(--color2);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    -webkit-clip-path: inset(51% 0 0 0);
            clip-path: inset(51% 0 0 0);
    -webkit-transform: rotateX(90deg);
            transform: rotateX(90deg);
  }
  
  .digit-flipper__digit--flip-bottom .digit-flipper__digit-bottom {
    -webkit-animation: flip-bottom var(--flip-duration) ease-in 0s 1 forwards;
            animation: flip-bottom var(--flip-duration) ease-in 0s 1 forwards;
  }
  
  .digit-flipper__digit--flip-top .digit-flipper__digit-top {
    -webkit-animation: flip-top var(--flip-duration) ease-in 0s 1 forwards;
            animation: flip-top var(--flip-duration) ease-in 0s 1 forwards;
  }
  
  .digit-flipper__digit--flip-done .digit-flipper__digit-bottom {
    -webkit-transform: rotateX(0deg);
            transform: rotateX(0deg);
  }
  
  @-webkit-keyframes flip-top {
    from {
      -webkit-transform: rotateX(0deg);
              transform: rotateX(0deg);
    }
    to {
      -webkit-transform: rotateX(-90deg);
              transform: rotateX(-90deg);
    }
  }
  
  @keyframes flip-top {
    from {
      -webkit-transform: rotateX(0deg);
              transform: rotateX(0deg);
    }
    to {
      -webkit-transform: rotateX(-90deg);
              transform: rotateX(-90deg);
    }
  }
  @-webkit-keyframes flip-bottom {
    from {
      -webkit-transform: rotateX(90deg);
              transform: rotateX(90deg);
    }
    to {
      -webkit-transform: rotateX(0deg);
              transform: rotateX(0deg);
    }
  }
  @keyframes flip-bottom {
    from {
      -webkit-transform: rotateX(90deg);
              transform: rotateX(90deg);
    }
    to {
      -webkit-transform: rotateX(0deg);
              transform: rotateX(0deg);
    }
  }
  
  
  .controls {
    background-color: white;
    border-radius: 10px;
    box-shadow: inset -2px -2px 5px 0px rgba(0, 0, 0, 0.1), 5px 5px 10px 0px rgba(0, 0, 0, 0.15);
    margin: 20px 0 auto;
    padding: 4px 20px 20px;
    text-align: center;
  }
  
  .cool-element {
    //background-color: #404040;
    border-radius: 15px;
   // box-shadow: inset -2px -2px 10px 0px black, inset 4px 4px 10px 0px rgba(255, 255, 255, 0.4), 5px 5px 15px 0px rgba(0, 0, 0, 0.3);
    margin: -40px 0 auto;
    //padding: 20px 18px 16px;
  }