body {
  text-align: center;
  background-color: #011F3F;
}

#level-title {
  font-family: 'Press Start 2P', cursive;
  font-size: 3rem;
  margin:  5%;
  color: #FEF2BF;
}

.container {
  display: block;
  width: 28%;
  margin: auto;
  border-radius: 50%;
  padding: 0;
}

.btn {
  margin: 5px;
  display: inline-block;
  height: 200px;
  width: 200px;
  border: 10px solid #010913;
}

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

.red {
  background-color: red;
  border-top-right-radius: 100%;
}

.green {
  background-color: green;
  border-top-left-radius: 100%;
}

.blue {
  background-color: blue;
  border-bottom-right-radius: 100%;
}

.yellow {
  background-color: yellow;
  border-bottom-left-radius: 100%;
}

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

@media (max-width: 1700px) {
  .container {
    width: 50%;
    border-radius: 50%;
  } 
  .btn {
    height: 200px;
    width: 200px;
  }
}

@media (max-width: 1100px) {
  .btn {
    height: 110px;
    width: 110px;
  }
  #level-title {
    font-size: 2rem;
  }
}

@media (max-width: 800px) {
  .btn {
    height: 80px;
    width: 80px;
  }
}
@media (max-width: 600px) {
  #level-title {
    font-size: 1.5rem;
  }
  .btn {
    height: 60px;
    width: 60px;
    border-style: none;
  }
} 
@media (max-width: 400px) {
  #level-title {
    font-size: 1rem;
  }
  .btn {
    height: 40px;
    width: 40px;
  }
}
@media (max-width: 320px) {
  #level-title {
    font-size: 0.8rem;
  }
  .btn {
    height: 20px;
    width: 20px;
  }
}