shortcodes.php

<?php

//* Shortcode to output video embed with responsive wrapper
function dee_video($atts, $content = null) {

	extract(shortcode_atts(array(
		'width' => '500',
	), $atts));
	
	$output = '<div class="video-container" style="max-width:' . $width . 'px;">';
	$output .= '<div class="responsive-video">';
	$output .= $content;
	$output .= '</div></div>';
	
	return $output;
}
add_shortcode( 'responsive-video', 'dee_video' );

?>