Gallery Reel
Use this code to Custom CSS box
div.gallery-reel-item-src:before { content: ""; width: 30px; height: 30px; background-image: url(https://cdn.pixabay.com/photo/2024/02/07/16/15/flower-8559381_1280.jpg); background-size: contain; background-repeat: no-repeat; background-position: bottom; position: absolute; bottom: 10px; right: 10px; z-index: 999999; }
Result: