.gallery{display:flex;flex-direction:row;flex-wrap:wrap}.gallery-item{flex:0 0 auto;width:200px;height:200px;margin:10px;transition:transform .3s}.gallery-item:hover{transform:scale(1.1);z-index:1}#popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#fff;padding:20px;border:1px solid #000;z-index:9999;max-height:95%;overflow-y:auto}#popup img{max-width:100%;height:auto}#popup .close{position:absolute;top:4px;right:3px;cursor:pointer}