html,
body {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
  /* background: #fafafa; */
  /* background: whitesmoke; */
  background: white;
  font-family: "Helvetica Neue", arial, sans-serif;
  font-weight: 400;
  color: #444;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 80%;
  margin: auto;
  padding-top: 40px;
  padding-bottom: 20px;
}

#coin {
  position: relative;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 6px solid black;
  background-color: #ffd700;
  transform-style: preserve-3d;
}

.kop {
  animation: kop 4s;
  animation-fill-mode: forwards;
}

@keyframes kop {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(1800deg);
  }
}

.munt {
  animation: munt 4s;
  animation-fill-mode: forwards;
}

@keyframes munt {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(1620deg);
  }
}

#kop,
#munt {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* #kop {
  z-index: 100;
} */

#munt {
  transform: rotateY(180deg);
}

#break {
  position: absolute;
  bottom: 90px;
  width: 100%;
}

#menu {
  position: absolute;
  width: 80%;
  left: 10%;
  bottom: 40px;
  display: flex;
  justify-content: space-evenly;
  padding-top: 20px;
}

#volume {
  display: block;
}

#no_volume {
  display: none;
}