body {
    text-align: center;
    background-color: bisque;
}

.btn {
    height : 200px;
    width : 200px;
    border-radius: 20%;
    border: 6px solid black;
    margin: 2rem;
}

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

.red {
    background-color:#d95980 ;
}

.yellow {
    background-color:#f99b45;
}

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

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

.flash {
    background-color: white;
}

.userflash {
    background-color: rgb(113, 247, 113);
}
#start-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    cursor: pointer;
    border: none;
    color: white;
    border-radius: 10px;
}
#start-btn {
    background-color: #333;
}