Form submit button not resizing for mobile

Hi. I have a form embedded via iframe on my site:

https://form.jotform.com/201274885714157

in

sale.demosho.com/animation-sale-info

For the life of me I cannot figure out how to make the submit button resize on mobile, I've tried the codes from previous posts but none seem to be working. Any help is greatly appreciated.

Hello @Demosho

Kindly try adding the following Custom CSS Code:

@media(max-width:750px)
{
button#input_2
{
  width:100%;
  font-size: 22px;
}
}

Guide: How-to-inject-custom-css-codes

Note that you must generate and and embed a new iframe code after adding the CSS.

Let us know how it goes.