apply js & css to iframe content

[srikanthash]

hi we are using prestashop version 1.6.3
facing problem with Iframe design.
when we are addign css in iframe
the theme is adding css and JS on top of the page above the html tag
and we want to add it in html tag
please some one help to sort it out.

 we are using fancybox IFRAME

 

but when we remove the css from iframe we are able to create a new account and when wee add the css we are getting the given error : i.e. TECHNICAL ERROR: unable to load form. Details: Error thrown: [object Object] Text status: parsererror

 

And we are using this free module in our website :(Fancy Box IFRAME MODULE)