Hi, i have a problem with viewing my created forms in iphone 4s, 5s.

You can see my Forms here:
http://ollinone.de/?page_id=2496

I think, that is a css-problem, but how can i configure
the code of my form that the viewing can be automatically shows in the devices?

Bye bye

In WFB, look under "customize margins" on the form options tab. You have a 250px margin set on the form. That produces the margin below that doesn't change even when the page gets smaller for mobile devices.

Thank you for your answer. If i set an other value than 250px margin on the form, than you can see it in IPhone a little bit better, but no more on desktop computer. That must working automatically.

Try setting the margin at 4 and then let's find out why it doesn't show up correctly for the desktop computer.

I see the form on my iphone 4s and it looks the same as my desktop except the responsive menu. Are you using a responsive form?
Form width of 856 seems a little excessive.