div.example{width:100%;clear:both;margin:1.5em auto;border-radius:8px;min-height:160px;max-width:256px;background-color:#999;background-image:repeating-linear-gradient(45deg, gray 25%, transparent 25%, transparent 75%, gray 75%, gray),repeating-linear-gradient(45deg, gray 25%, #999 25%, #999 75%, gray 75%, gray);background-position:0 0,16px 16px;background-size:32px 32px;display:flex;align-items:center;justify-content:center}