body{
    text-align: center;
}
.btn{
    height: 150px;
    width: 150px;
    border: 10px solid black;
    border-radius: 50%;
    margin: 1.2rem;
}
.box{
    display: flex;
    justify-content: center;
}
.red{
    background-color: #FD5EFF;
}
.green{
    background-color: #60FF5E;
}
.blue{
    background-color: #5EB0FF;
}
.yellow{
    background-color: #FFAD5E;
}
.flash{
    background-color: white;
}
.userflash{
    background-color: green;
}