ساخت Background Pattern

background-color: #0c1210;
background-image:
  linear-gradient(45deg, #ea6005 25%, transparent 25%),
  linear-gradient(-45deg, #ea6005 25%, transparent 25%),
  linear-gradient(45deg, transparent 75%, #ea6005 75%),
  linear-gradient(-45deg, transparent 75%, #ea6005 75%);
background-size: 24px 24px;
background-position: 0 0, 0 12px, 12px -12px, -12px 0;