How can I set up a transparent background to my form?

La pagina no se muestra tal cual esta en esta imagen y por lo que veo tambien ha cambiado su performance... por favor podrias subir una captura reciente ? porque he intentado colocar el fondo transparente y no lo he logrado... antes era mas facil! Gracias...

Yes, the wizards have change since 2014, the year when the other thread was opened, it is a bit different now and there are multiple options to set up a transparent background to your form. 

The first way is by opening the Mini Designer tool and setting up the background to transparent there, here is a screenshot for visual guidance: 

You can also click on the "Advanced Designer" button in order to get the full designer tool, once there go to the form background section and click on the "X" icon to remove  the background color: 

There is a third option, you may inject this CSS code to your form: 

.supernova, .form-all{

    background: transparent !important;

}

This will set the background to transparent as well, here is the guide that will help you to inject the code: How-to-Inject-Custom-CSS-Codes

Hope this helps. 

Genial.... jamas imagine que iban a contestar.... muchas gracias!

On behalf of my colleague, you're welcome. 

If you need anything else, let us know. We'll be happy to assist you.