How can I hide the submit button in the form source codes embed?

Now I need to hide the button from my page, without deleting it or else I can't simulate its click.
I tried to put its display to none but oddly it doesn't work..document.getElementById('60892377133359').contentWindow.document.getElementById("input_2").style.display = "none";
Do you have a solution to hide the button?
Thanks.
Cordialement,
Cindy, MiCICI
www.micici.fr

In the CSS area of the source codes, inject the following custom CSS codes to hide the submit button:

.form-submit-button {

display: none;

}

 

Thank you :)