Reorder Divi Checkerboard Panels on Mobile

example.css

/* add this block of code to the theme options > custom styles area */
/* add class "pnpd-swap-mobile-order" to checkerboard rows you wish to reorder on mobile */

@media only screen and (max-width: 980px) {
  .pnpd-swap-mobile-order {
    box-sizing: border-box;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .pnpd-swap-mobile-order div:nth-child(1) {
    -webkit-box-ordinal-group: 3;
    -webkit-order: 2;
        -ms-flex-order: 2;
            order: 2;
  }
  .pnpd-swap-mobile-order div:nth-child(2) {
    -webkit-box-ordinal-group: 2;
    -webkit-order: 1;
        -ms-flex-order: 1;
            order: 1;
  }
}