Center Align the Submit Button

Hello,

I am using the platinum version of this plugin and would like to know how I can center-align the submit button in the form. So far, using “float”, I am able to move the button to the right, or using “display:block !important; width:100% !important;” I can make the button fullwidth. But how do I retain the default size and simply center the button in the form?

Thanks in advance.

Kind regards…