html {
    box-sizing: border-box;
    font-size: 10px;
    background: #ffc600;
  }
  
  *, *:before, *:after {
    box-sizing: inherit;
  }
  
  body {
    padding: 0;
    margin: 0;
    font-family: 'Amatic SC', cursive;
  }
  .parent{
    position: relative;
  }
  h1 {
    text-align: center;
    font-size: 10rem;
    line-height: 1;
    margin-bottom: 0;
   
  }
  
  .score {
    background: rgba(255,255,255,0.2);
    padding: 0 3rem;
    line-height: 1;
    border-radius: 1rem;
  }
  
  .game {
    width: 600px;
    height: 400px;
    display: flex;
    flex-wrap: wrap;
    margin: 100px auto;
  }
  
  .hole {
    flex: 1 0 33.33%;
    overflow: hidden;
    position: relative;
  }
  
  .hole:after {
    display: block;
    background: url(dirt.svg) bottom center no-repeat;
    background-size: contain;
    content: '';
    width: 100%;
    height:70px;
    position: absolute;
    z-index: 2;
    bottom: -30px;
  }
  
  .mole {
    background: url('mole.svg') bottom center no-repeat;
    background-size: 60%;
    position: absolute;
    top: 100%;
    width: 100%;
    height: 100%;
    transition:all 0.4s;
  }
  
  .hole.up .mole {
    top: 0;
  }

  .btn{
    padding: 10px 40px;
    text-decoration: none;
    border:1px solid #ffc600;
    background-color: black;
    color: #ffc600;
    position: absolute;
    top: 130%;
    right: 48%;
    font-size: 20px;
  }

  .btn:hover{
    color: black;
    background-color: #ffc600;
    cursor: pointer;
    border: 1px solid black;
  }