[Plugin: Shadowbox JS] control size of video lightbotx

I have the link working correctly to my youtube from an image. But the lightbox size is too large, it shows the video as full screen How do I set that?

My settings are set to the default
This is my code as seen at https://www.suzalambertbowser.com home page. First static image on the left.

<img class=”aligncenter size-full wp-image-180″ title=”River of Skulls Film” src=”https://www.suzalambertbowser.com/wp-content/uploads/1_WidgetMiddle_Images_AROS1.jpg&#8221; alt=”River of Skulls” width=”290″ height=”200″ />After losing their loved ones, Eula Seeley and “half- breed,” Jack Rivers, fight tragic odds to survive deceit and betrayal, greed and violence in the wild 1870’s, finding each other in the process. Read more…