embed youtube video auto height
<!-- CSS -->
<style>
.video-container {
position: relative;
padding-bottom: 56.25%; /* 16:9 */
height: 0;
}
.video-container iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
</style>
<!-- HTML -->
<div class="video-container">
<iframe width="560" height="315" src="https://www.youtube.com/embed/_TyJeKKQh-s?controls=0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>