#popup-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);display:none;justify-content:center;align-items:center;z-index:9999}#popup-box{background:#fff;padding:20px;max-width:600px;width:90%;position:relative}#close-popup{position:absolute;top:10px;right:15px;cursor:pointer;font-size:20px}.form-content{display:none}