.btn-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}


body {
    text-align: center;
    font-family: Arial, sans-serif;
}



.line-one, .line-two {
    display: flex;
}

.btn {
    height: 250px;
    width: 250px;
    background-color: lightgray;
    border: 2px solid black;
    margin: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    border: 10px solid black;
    border-radius: 20%;

}

.yellow{
    background-color: #f99b45;
}


.red{
    background-color: #d95980;
}



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

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

.flash{
    background-color: azure;
}

.userflash{
    background-color: green;
}