Embedded Content - keep it small or scrollable

Hey everybody,

I’m nearly done with my website and I love sparkle. My Program is in German, so if I use a misleading term it’s probably the translation.

The problem:
I would like to add a small piece of embedded code, but it always breaks the boundaries. The external code provides a mobile view which would be small enough, but way too high. Is there a possibility to make the embedded view scrollable? Or force it to stay in the box I make? I know there is a check box that reads something like: content is vertically expanded, but it makes no difference wether I check it or not.

Thank you,