Form CSS is getting changed when the form is opened in Advanced designer

and here i confrontated with another issue. If i click on the advance designer - every css styles dont work more. So my design would change to a non css design, which looks very bad. 

It seems that there is some CSS code generated and added to the form which may be causing the issue. Could you take a look at the CSS code injected to the form and review it once? You may try applying the default scheme and then add your custom CSS code to see if that helps.

Please get back to us if the issue still persists. We will be happy to help.