How to change left and right footer blocks to one center block on Adirondack template?

Site URL: https://www.clarkfarmcarlisle.com/

On the Adirondack template, I am trying to create a center footer block so that I can stack all of the content in the existing left and right footers.

Hi. Add to Design > Custom CSS

@media screen and (min-width:641px) {
footer#footer>div {
    width: 70% !important;
    margin: 0 auto !important;
    float: none !important;
    display: block !important;
}
}