body{
    text-align: center;
  }
  
  .btn{
    height: 200px;
    width: 200px;
    border-radius: 20%;
    border: 10px solid black;
    margin: 2.5rem;
  }
  
  .btn-container{
    display: flex;
    justify-content: center;
  }
  
  .red{
    background-color: #d95980;
  }
  .yellow{
    background-color: #f99b45;
  }
  .green{
    background-color: #63aac0;
  }
  .purple{
    background: #819ff9;
  }
  .flash{
    background-color: white;
  }
  .userFlash{
    background-color: green;
  }