#container-thanks{display:none;position:fixed;width:300px;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;background-color:#fff;padding:30px;border-radius:10px;box-shadow:0 2px 4px rgba(0,0,0,.1);z-index:3}.thank-you-icon{font-size:48px;color:#4caf50;margin-bottom:20px}.overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:10}.form-con.centered{position:fixed;left:40%;top:50%;transform:translate(0,0)}@media (max-width:978px){#container-thanks{width:80%;max-width:300px}}