<style>
#bg {width:1600px; height:900px; z-index: -9999;top:0px;left:0px;position:fixed;}
</style>
<div id="bg">
<iframe width="1600" height="900" src="https://www.youtube.com/embed/RsyRtrFq_oE?rel=0&autoplay=1&loop=1&playlist=sxKA1j-Rjbo" frameborder="0" allowfullscreen></iframe>
</div>