menu_base64.css

#menu {
  background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABUAAAARCAYAAAAyhueAAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACVJREFUeNpi/A8EDFQGTAw0ADQxdBRQHzCOJqlRMJqkqAgAAgwAxggMBCM7bBAAAAAASUVORK5CYII=");
  background-repeat: no-repeat;
  background-position: center center;
  background-color: #111;
  width: 50px;
  height: 50px;
}