Widget custom with CSS

Hello,

I would like to integrate the widget contact to our customer website page, I added the widget script inside the page and it’s working, but my customer needs to have a fullscreen help contact page and other style changes and to do so, I need to manipulate the style of the iframe. I’m trying to add custom CSS stylesheet into the iFrame’s head and it’s working but I’m afraid of Cross Origin error (CORS) when I will deploy the app on the customer production website.

Could-you, please, confirm that it’s possible to do somethings like that ?

If it’s not possible which api it’s possible to integrate to create ou custom help contact page and send data to API for creating tickets.

Thanks you in advance
Benjamin