.caption-handler:hover .caption-content{width:100%;height:100%}.caption-handler:hover .caption-button{display:none}.caption{color:#fff;font-size:16px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.file-drop{border:1px dashed #ccc;text-align:center;cursor:pointer}.file-drop.drag-over{border-color:#00f}