I'm experimenting with the Portfolio items, and have created a new portfolio page.  The original default font/typeface was Roboto, I believe?  I've since changed it to Open Sans in several places:

- Appearance>Customize>Typography>General

- Going to a Page>Edit with Elementor>Hamburger menu>Default Fonts

- Appearance>Theme Editor>built-in CSS editor>Additional CSS>Added: body{font-family: "Open Sans", Verdana, Sans-Serif;}

- I've also added it to the actual style.css as: 

body:not(.elementor-page) .wp-caption img {
  margin-top: 15px;
  font-family: Open Sans, Verdana, Sans-Serif;
}

However, for portfolio items, the paragraph is still showing Roboto and not Open Sans. I suspect it's because it's not using Elementor for the Portfolio pages.  Would you know how to change the paragraph font to Open Sans for portfolio items? Thanks.

I inspected the text with Chrome.  The header is fine and is Open Sans.  The body text, however, it's ignoring the body CSS styles I specified.  It's getting the Segoe UI typeface from somewhere.

Perfect, thank you! I should have thought of that. :)