.popup{ display:none; position:fixed; left:0; top:0; width:100%; height:100%; background:rgba(0,0,0,.65); z-index:9999; } .popup-content{ position:relative; width:420px; max-width:90%; margin:5% auto; background:white; border-radius:12px; overflow:hidden; box-shadow:0 10px 35px rgba(0,0,0,.3); text-align:center; animation:popup .35s ease; } .popup-img{ width:100%; display:block; } .popup-content h2{ margin:20px 15px 10px; } .popup-content p{ margin:0 20px 20px; } .btn{ display:inline-block; margin-bottom:25px; padding:12px 28px; background:#0d6efd; color:#fff; text-decoration:none; border-radius:6px; font-weight:bold; } .close{ position:absolute; right:12px; top:8px; font-size:30px; color:white; cursor:pointer; text-shadow:0 0 5px black; } @keyframes popup{ from{ transform:scale(.8); opacity:0; } to{ transform:scale(1); opacity:1; } } window.onload = function(){ setTimeout(function(){ document.getElementById("popup").style.display="block"; },2000); } document.querySelector(".close").onclick = function(){ document.getElementById("popup").style.display="none"; } window.onclick = function(e){ if(e.target==document.getElementById("popup")){ document.getElementById("popup").style.display="none"; } }