.image_preview{object-fit:contain;border-radius:5px;width:48px;height:48px;display:inline-block}.image_preview:before{content:"?";text-align:center;color:#fff;background-color:gray;border-radius:5px;width:48px;height:48px;font-size:2.5rem;line-height:50px;display:block;position:absolute}