HTML form code – display inline problems

Hi,

I’d like to display my Mailpoet form on a single line and embed it in an Icegram popup. However, I’m having trouble editing your HTML code to display on a single line. I’ve tried the following to no avail:
1. .widget_wysija .wysija-submit, .widget_wysija .wysija-paragraph { display: inline; }
2. https://www.textfixer.com/tools/remove-line-breaks.php

Thank you.

Ruby

https://www.ads-software.com/plugins/wysija-newsletters/