What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I just assumed you are referring to this form http://www.jotformeu.com/form/60524091894358.
The space on the left of your image in the header is supposed to be an area for header text.
However, if you want your image to occupy the whole block and be center aligned, you can inject the following CSS to your form.
Let us know how it goes.
P.S. If you are referring to a different form, please point us to the correct URL so we can check further.
have inserted the CSS but still left aligned and won’t centre on page
Please inject the CSS code below instead. This should align the image to the center.
If you need further assistance, please let us know.