body{
    text-align:center;
}

.btn{
    height:100px;
    width:100px;
    border-radius:20%;
    border:10px solid black;
    margin:2rem;
}

.btn-container{
    display:flex;
    justify-content:center;
}
.yellow{
    background-color: #f99b45;
}

.red{
    background-color: #d95980;
}
  
.purple{
    background-color:#819ff9;
}

.green{
    background-color: #63aac0;
}

.flash{
    background-color: white;
}
.userflash{
    background-color: green;
}