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;
  width: 100vw;
}

h1 {
  text-align: center;
  font-size: 10rem;
  line-height: 1;
  margin-bottom: 0;
}

h2 {
  text-align: center;
  font-size: 5rem;
}

.score, .highscore {
  background: rgba(255,255,255,0.2);
  padding: 0 3rem;
  line-height: 1;
  border-radius: 1rem;
}

.highscore {
  padding: 0 1.5rem;
}
.game {
  width: 600px;
  height: 400px;
  display: flex;
  flex-wrap: wrap;
  margin: 3rem 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;
}

button {
  padding: 1rem 3rem;
  background-color: orange;
  font-size: 2rem;
  border-radius: 10px;
  border: none;
  box-shadow: 0 0 5px #000;
  cursor: pointer;
  margin: 0 auto;
  display: block;
}
button:focus {
  outline: none;
  box-shadow: 0 0 10px rgb(2, 80, 13);
}