<div></div>
div {
  width: 300px;
  height: 400px;
  background-image: url(https://images.unsplash.com/photo-1705648336802-88f56d0d0cbc?crop=entropy&cs=srgb&fm=jpg&ixid=M3wzMjM4NDZ8MHwxfHJhbmRvbXx8fHx8fHx8fDE3MDkwMzYyODN8&ixlib=rb-4.0.3&q=85);
  background-size: cover;

  opacity: 0.5;
}
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