<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{
margin:0;
padding:0;
}
#app{
295px;
height: 160px;
position: relative;
}
#app img
{
position: absolute;
right: 0;
}
#app #close{
position: absolute;
18px;
height:18px;
border: 1px solid #e0e0e0;
text-align: center;
line-height: 18px;
cursor: pointer;
}
</style>
</head>
<body>
<div id="app">
<img src="img/sntk-top-code.png" id="code">
<span id="close">X</span>
</div>
<script>
var close=document.getElementById('close');
var code=document.getElementById('app');
close.onclick=function(){
app.style.display="none"
}
</script>
</body>
</html>