Embedded serlo.org content shows cropped license

[LarsTheGlidingSquirrel]

Steps to reproduce:

• Create plugin for embedding serlo content.
• Enter id 62045
• Scroll to the bottom of the iframe

At the bottom should be a license footer that is cropped, see image.

Could not reproduce the same issue on serlo.org.

[LarsTheGlidingSquirrel]

Fixed