How to stop form background image from repeating?

Hello Nahjeehw,

Please note that you have a long form and if you do not want to show the background image to be repeated then it will show a blank background at the bottom of form. 

Please inject the following custom css code in form to display background image without repeat:

.supernova {

    background-repeat: no-repeat !important;

}

The following guide should help you how to inject custom css code:  https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

Thank you!

I understand your point, however, about a month ago the image did not repeat itself and I had the same amount of information and length. Did something on jot form change recently ?
Sent from my iPhone
...

Each form can have different background settings which also can be affected by standard theme, designer's theme, applied custom theme and also injected CSS.

I have added the next CSS to your form:

.supernova {
height: 100%;
background-attachment: fixed;
background-repeat: no-repeat;
background-size: cover;
}

Please re-check the background.