How can i eliminated background

Hello good afternoon, when i embed a form, the backgroeund is always there, i dont want to see it i know i can use it in black or transparent, but even when i configure it that way the space of the background is still there, the thing is i want to embed my form inside a table.

Hello,

Have you tried inserting this CSS code if it works:

.supernova .form-all {
   box-shadow: 0 0 0 rgba(0, 0, 0, 0) !important;
   -webkit-box-shadow : 0 0 0 rgba(0, 0, 0, 0) !important;
   -moz-box-shadow : 0 0 0 rgba(0, 0, 0, 0) !important;
   background: transparent;
}

If you need to learn how to inject CSS in your form, please refer to this guide: https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

Feel free to let us know if you have questions.