body{
    text-align: center;
    margin-top: 4rem;

}
.btn{
    height: 8rem;
    width: 8rem;
    border-radius: 20%;
    border: 0.5rem solid black;
    margin: 1rem;

}
.btn-container{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    

}
.red{
    background-color: #d95980;
}
.yellow{
    background-color: #f99b45;
}
.green{
    background-color: #63aac0;
}
.purple{
    background-color: #819ff9;
}
.flash{
    background-color: white;
    box-shadow: 5px;
    
}
.userFlash{
    background-color: yellow;
    box-shadow: 5px;
}