How to make page background to transparent in form designer

I am trying to make the background transparent in my form and it is not registering.  Please advise

Hi,

Add this CSS codes to your form if you want the page background to be transparent.

.supernova {

background: transparent !important;

}

Should output like this,

---

You can also do it on the form designer. Click the background color and then drag the color opacity holder to the left to make it transparent. Example:

Thanks!