Problem with like button

Problem is CSS in your theme.
Fix it.
Search for css amending iframes.

Claudio, thanks for the fast repply.

I’m not a advanced user. Can you help me to fix this ?
i found this link:
https://stackoverflow.com/questions/217776/how-to-apply-css-to-iframe

Seems leggit, but i dont know where to put this codes.

This in your style.css that is generating the error:

embed, iframe, object, video {
    max-width: 100%;
}

Delete or fix it.

Thanks a lot, Claudio Sanches !
Works fine:
https://i.snag.gy/COc2O.jpg

is there any solution can be post in here ?

how to delete the css when i use the child theme css ?