Use code to the CSS Custom box
h1.ProductItem-details-title:after {
content: "";
background-image: url(https://cdn.pixabay.com/photo/2023/09/20/15/47/fish-8265114_1280.jpg);
background-size: contain;
display: inline-block;
width: 50px;
height: 50px;
}
Result:
