Embedding Youtube Videos

Hello,
I am trying to embed a youtube video into a post. No matter if I use shortcode, an iframe or an embed code, my width is always full (as opposed to the parameters I specify).
See here: http://www.texasoutdoorexchange.com/blogs/the-story-of-a-gun-shy-dog/
Scroll to the bottom.
What am i missing?
Thanks.

I can’t find my premium order number. Not sure if it was ever received.