Pasted

<style>
.embed-container { 
    position: relative; 
    padding-bottom: 56.25%; 
    padding-top: 30px; 
    height: 0; 
    overflow: hidden; 
    max-width: 100%; 
    height: auto; 
} 
.embed-container iframe, .embed-container object, .embed-container embed { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
}
</style>
<div class='embed-container'>
    <iframe src='http://www.youtube.com/embed/dQw4w9WgXcQ' frameborder='0' allowfullscreen></iframe>
</div>