remove shadow from form border

Are you referring to the same form border as your previous post here:

https://www.jotform.com/answers/1804197

If yes, please try injecting the following CSS code to your form.

Guide: How-to-Inject-Custom-CSS-Codes

.form-all { box-shadow: none !important; }

If this is not the border that you want removed, please share a screenshot.

Guide: How-to-Post-Screenshots-to-Our-Support-Forum