body {
  text-align: center;
  background-color: #7952B3;
/* #9682dc */
}

#level-title {
  font-family: 'Press Start 2P', cursive;
  font-size: 3rem;
  margin:  5%;
  color: yellow;
}

.container {
  display: block;
  width: 50%;
  margin: auto;

}

.btn {
  margin: 25px;
  display: inline-block;
  height: 200px;
  width: 200px;
  border: 10px solid black;
  border-radius: 20%;

}

.game-over {
  background-color: red;
  opacity: 0.8;
}

.red {
  background-color: red;
}

.green {
  background-color: green;
}

.blue {
  background-color: blue;
}

.yellow {
  background-color: yellow;
}

.pressed {
  box-shadow: 0 0 20px white;
  background-color: grey;
}

@media (max-width: 990px) {
  .btn {
    margin: 15px;
    display: inline-block;
    height: 150px;
    width: 150px;
    border: 7px solid black;
    border-radius: 18%;

  }
  .container{
    width: 50%;
  }
}