iFrame 16:9 Responsive Inline

<style>
div.framey {
position: relative;
margin: 0 auto;
width:100%;
padding-top: 56.25%;
height: auto;
}
iframe {
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
</style>
<div class="framey">
<iframe src="https://denverit.com"></iframe>
</div>