:root{--image-num: 0;--image-width: 200px;--image-gutter: 10px}@keyframes scroll{0%{left:0}100%{left:calc(-1*(var(--image-width) + var(--image-gutter))*var(--image-num))}}
.promotion-video-frame{position:absolute;top:0;left:0;bottom:0;right:0;border:none;width:100%;height:100%}
.image-box .delete-btn{visibility:hidden;opacity:0;transition:opacity .3s}.image-box:hover .delete-btn{visibility:visible;opacity:1}.image-box .delete-btn.keep-visible{visibility:visible;opacity:1}

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