Header not filling out the full jotform width

My header does not fully fill my form. It's leaving a margin on the left and right of the form, however it does appear that way when I preview the form. It only shows when I put it on a web page.

It is always best to give us the link to the page where the jotform is to be sure that we can see the issue and suggest proper code to resolve this, but looking at your jotforms I think that I have spotted the potential 'issue' withing the CSS code.

This should help you to resolve this and have the header shown fully wide on your jotform:

To inject it to your jotform, please follow these steps: Inject Custom CSS Codes

Do let us know how it goes :)