.fill-area{display:table;z-index:-1;position:absolute;top:-320000px;left:-320000px;width:640000px;height:640000px}.background{background-color:#fff;opacity:1;background-image:linear-gradient(#f1f1f1 3.2px,transparent 0),linear-gradient(90deg,#f1f1f1 3.2px,transparent 0),linear-gradient(#f1f1f1 1.6px,transparent 0),linear-gradient(90deg,#f1f1f1 1.6px,#fff 0);background-size:80px 80px,80px 80px,16px 16px,16px 16px;background-position:-3.2px -3.2px,-3.2px -3.2px,-1.6px -1.6px,-1.6px -1.6px}