.table{display:table;border-collapse:separate;box-sizing:border-box;text-indent:initial;unicode-bidi:isolate;border-spacing:2px;border-color:gray;text-align:center;margin:auto}.tr{display:table-row;vertical-align:inherit;unicode-bidi:isolate;border-color:inherit}.td{display:table-cell;vertical-align:inherit;unicode-bidi:isolate}.cells{background-color:#fff;color:#000;width:40px;height:40px;text-align:center;vertical-align:middle;text-transform:uppercase}.space{background-color:#000}