simple bottom modal for a survey

bottom-modal.html

<?php //=============================Survey Modal=======================
	if(is_null($_COOKIE['pcsd-chocochip'])){ ?>
<div id="modalcontrols">
<h2>Bottom Modal</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <headerclass="modal-head">
      <span class="close">&times</span>
      <h2>Online Survey – Got a Few Minutes?</h2>
    </header><!--modal-head end -->
   <article>
   		<img src="http://provo.edu/wp-content/uploads/2016/09/survey.jpg" alt="" />
    	<p>Hi, we’re working on a new website and we really need your help. If you could take 3 - 5 minutes to give us your opinion we’d be very grateful. Are you ready?</p>
   </article>
	<aside>
		<ul><!--chocochip cookie is hides modal forever, vanilla only hides for 12 hours -->
     		<li><a onClick="SetCookie('pcsd-chocochip','anycontent', 90);javascript:location.href='https://www.surveymonkey.com/r/PCSDwebsite';" href="https://www.surveymonkey.com/r/PCSDwebsite">Okay! Start the survey now.</a></li>
     		<li><a class="closelink" href="#" onClick="SetCookie('pcsd-chocochip','anycontent', 1);return false;">Yes, but I don’t have time right now.</a></li>
     		<li><a class="closelink" href="#" onClick="SetCookie('pcsd-chocochip','anycontent', 90);return false;">No thanks. (Don’t ask me again)</a></li>
     	</ul>
	</aside>
    <footer class="modal-foot">
      
    </footer>
  </div>
 </div><!-- end  id="modalcontrols"-->
<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
var li = document.getElementsByClassName("closelink")[0];
//makes the pop up appear after time specified in mil seconds
setTimeout(function(){ document.getElementById('myModal').style.display='block'; }, 5000);

			
// When the user clicks the button, open the modal 
btn.onclick = function() {
    modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
    modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
//cookie set function
function SetCookie(c_name,value,expiredays)
        {
            var exdate=new Date()
            exdate.setDate(exdate.getDate()+expiredays)
            document.cookie=c_name+ "=" +escape(value)+
            ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
    		location.reload()
        }

</script><?php
}else {} ?>
</div>

<style>
/* -----------------------Modal Content--------------------------- */
.modal-content {
    position: fixed;
    bottom: 0;
    background-color: #fff;
    max-width: 640px;
    right: 0;
    left: 0;
    margin: 0 auto;
    text-align: center;
    -webkit-animation-name: slideIn;
    -webkit-animation-duration: 1s;
    animation-name: slideIn;
    animation-duration: 1s
}
.close {
    color: #000;
    float: right;
    font-size: 28px;
    font-weight: bold;
    margin-right: 15px;
}
.close:hover,
.close:focus {
    color: #ccc;
    text-decoration: none;
    cursor: pointer;
}
.modal-head {
    padding: 0px 50px 0px 50px;
    background-color: #fff;
    height: 100px;
}
.modal-content article {padding: 0px 70px 0px 70px;border: none;}
.modal-content article p {text-align: left;}
.modal-content article img {float: left;margin-right: 30px;}
.modal-content aside {padding: 0px 70px 0px 70px;}
.modal-content aside ul {margin: 60px auto;padding: 0;}
.modal-content aside ul li {list-style: none;font-size: 14px;}
.modal-foot {
    height: 100px;
    background-color: #103759;
    color: #fff;
}
</style>