td { padding-bottom: 5px; padding-top: 5px; } td.first { border-right: 2px solid #000; padding-right: 5px; } td:not(.first) { text-align: center; } .column:first-of-type {float:left} .column:last-of-type {float:right} .split-40 .column:first-of-type {width: 60%} .split-40 .column:last-of-type {width: 40%} .remark-slide-number { opacity: 0.0; } img { display: block; margin-left: auto; margin-right: auto; width: 80%; }