How i remove the shadow between the background and frame on my form?

Hello and sorry my english

My form must have a completelly white background, with the shadows between the background and frame, how i remove complet4elly the shadow?

Please inject the following CSS code as explained on this guide: http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

.form-all{

    box-shadow: none !important;

}

Let us know if you need more help.