Remove the top spacing of the form

Actually, when you embed the form to your website, the top spacing of the form will automatically decrease depending on the size of the window or the container.

However if you want to remove it, inject this CSS codes to your form.

.jotform-form {

    padding: 0;

}

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

If you have any other questions, let us know.