.ad-btn{background-color:#000;color:#fff;padding:12px 25px;border:none;cursor:pointer;border-radius:6px;font-size:16px}.ad-popup{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background-color:rgb(0 0 0 / .4)}.ad-popup-content{background:#fff;color:#000;margin:10% auto;padding:20px;border-radius:8px;width:90%;max-width:450px;box-shadow:0 2px 10px rgb(0 0 0 / .2)}.ad-popup-content input,select,button{width:100%;margin:10px 0;padding:10px}.ad-close{float:right;font-size:28px;cursor:pointer}.ad-success{background:#e0ffe0;color:#060;padding:10px;text-align:center;border-radius:5px;margin-top:10px}