popup.2

<!DOCTYPE html>
<html>
<head>
<style>
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.7);
}

.modal-content {
    position: relative;
    background-color: #ffffff;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 80%;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    -webkit-animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-name: animatetop;
    animation-duration: 0.4s
}

@-webkit-keyframes animatetop {
    from {bottom:-300px; opacity:0}
    to {top:0; opacity:1}
}

@keyframes animatetop {
    from {bottom:-300px; opacity:0}
    to {top:0; opacity:1}
}

.close {
    color: white;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.modal-header {
    background: red; /* For browsers that do not support gradients */
    background: -webkit-linear-gradient(red, yellow); /* For Safari 5.1 to 6.0 */
    background: -o-linear-gradient(red, yellow); /* For Opera 11.1 to 12.0 */
    background: -moz-linear-gradient(red, yellow); /* For Firefox 3.6 to 15 */
    background: linear-gradient(red, yellow); /* Standard syntax */
}

.modal-body {padding: 2px 16px;}

.modal-footer {
    padding: 2px 16px;
    background-color: #5cb85c;
    color: white;
}
</style>
</head>

<body>

<button id="myBtn">knopka</button>

<div id="myModal" class="modal">

  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h1>golova<h1>
    </div>
    <div class="modal-body">
      <p>telo</p>
    </div>
    <div class="modal-footer">
      <h2>nogi</h2>
    </div>
  </div>

</div>

<script>
var modal = document.getElementById('myModal');

var btn = document.getElementById("myBtn");

var span = document.getElementsByClassName("close")[0];

btn.onclick = function() {
    modal.style.display = "block";
}

span.onclick = function() {
    modal.style.display = "none";
}

window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
</script>

</body>
</html>