How can I remove the grey box around the thank you message?

The main contact form has a plain white background. When the form is submitted and the thank you message shows there is a grey box which surrounds the message. How can I turn that white (or transparent)?

The background color of the Thank you page is inherited from the background of the form. You may change this color to white, by injecting the following CSS code:

body.thankyou {

    background-color: #fff;

}

body.thankyou > div#stage {

    box-shadow: none;

}

The Thank you page should be displayed as shown below after injecting the CSS code above:

Please refer to the guide below that helps in injecting CSS code to your JotForm.

http://www.jotform.com/help/117-How-to-Inject-Custom-CSS

Hope this information helps!  

Perfect, Thank you!

@charmingimage, I moved your concern on a separate thread so we can assist you better. You can check the thread here: https://www.jotform.com/answers/848373. We will attend to your concern on that thread accordingly. Regards.