Styles disappearing during generation (RH2020)

[GeoffreyMarnell]

Hi again. Today, all I added to a RH project was a masterpage with breadcrumbs. I don't know if this is related, but all of a sudden one of my heading styles—once bold and red—is not displaying as it was before. What is strange is that when I look at a topic with this style in it in Author view and Preview, the heading style renders correctly (bold and red). When I look at the Source view, the right class is being applied. And when I look at the style in the CSS—Heading3NonTOC—it is bold, 13 pt and red (#DE350B):

So the CSS is being applied correctly in RH. But when I generate HTML 5, the heading is rendered 12 pt normal and black. 

Adding to the strangemess, when I interrodate the generated HTML, the heading that is 12 pt normal and black is styled with the CSS class that says it should be bold and red:

<p class="Heading3NonTOC">Expanding and collapsing elements</p>

I'm thoroughly lost! Any ideas?

[Amebr · Accepted solution]

Do you have a stylesheet assigned to the master page and is it different from the one assigned to the topic? If so I believe the master page one will override your topic one.

If not then I think the next step is to use the developer tools to see what stylesheet is being applied in the output. That might give some clues. 

[GeoffreyMarnell]

Yes, I found a stylesheet attached to the master page (though I hadn't actually selected it). Perhaps it was automatically attached because I had modified some of the breadcrumb styles. Anyway, I deleted the reference to a stylesheet and regenerated the project—and my styles came back. Many thanks for your help—ance again.