#intro {
    text-align: center;
    align-items: center;
}
button.invis-button {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    color: inherit; /* Parent color to match the table */
    font: inherit;
    cursor: pointer;
}
button.invis-button:hover {
    text-decoration: underline;
}