Will This Site Look Different Once Published?

We’re adjusting a website for a client. Upon opening the project in Webflow, there’s at least one notable difference from the live, published version of the site: It’s missing the diagonal shape in the hero area.

Is there anything that would cause this diagonal to not be visible until published? I myself am not a developer, just a designer, so I’m not sure what to look for in case the previous designer included custom CSS. I’m concerned that something was altered in the project before it was handed off to us to cause these diagonals to go missing.

Read-Only Link to Webflow Project

Live Site for Comparison

Thank you!