Form Layout: How to remove the border/shadow of the form?

I need to create forms that fit into our website, and I would like to have the form with absolutely no border or drop shadow background at all but can't find a way to do that.

You may try injecting this CSS code: 

.supernova .form-all{

    box-shadow: 0 0 0 rgba(0, 0, 0, 0) !important;    

}

It will remove the shadow effect around the form. If it does not help, please provide us the link/name of your form, if possible, provide us the link where it is embedded, we will be glad to take a look. 

I really want to take the shadow border off. But this code is not working for me.

Here is my site: http://www.atlantacactus.org/membership/

And the form is: https://form.jotform.com/62287879883176

EDIT: I used the script for the Wordpress.org version and it worked! I had been using the .com version. Thanks!