#popup-container{position:fixed;background:#fff;padding:20px;z-index:9999;max-width:90%;max-height:80%;overflow:auto;box-shadow:0 0 15px rgba(0,0,0,.3);border-radius:8px}.popup-centered{top:50%;left:50%;transform:translate(-50%,-50%)}.popup-top-right{top:100px;right:20px;left:auto;transform:none}