Adjust Button in Form Widget

I have a form widget on my website, and I was wondering if there is a way to adjust the size of the button in the form widget. Seems like everything is grouped together. I can’t seem to ungroup them and resize the button under the form. I’m not sure if this requires code or I missed a setting to do so. Any help will be appreciated!

you can change the button only with css. but this is possible.
use the dev-tools of your browser to find the right element and its css class you then want to adress via the custom css panel in RM…