#container{
    margin: 0 auto;
    max-width: 40rem;
}
#intro{
    max-width: 100%;
    text-align: center;
    margin: 0 auto;
}
#generate_button {
    color: white;
    border-color: #007bff;
    background: #007bff;
    width: 200px;
    height: 50px;
}
footer {
    visibility: hidden
}