How can I add css to control the size of oEmbed videos – YouTube, Vimeo etc? From what I can see the css used by default is pulled from the external video source. I don’t know if, or how I can override this? I have added custom css styling but that hasn’t worked.
@style960 for video and other embeds, that’s usually handled by the setting of the content width in your theme’s functions.php file.
/**
* Set the content width based on the theme’s design and stylesheet.
*/
if ( ! isset( $content_width ) ) {
$content_width = 660;
}