[AaronMo]

I'm a CSS/Sigil newbie. I've been working on an epub that originated in Adobe Indesign. Today I added a new html file inside the epub for a second title page. Long story short, when I copied and pasted contents from the original title page into the new file, it caused the table of contents to appear on ebook pages. I recreated the issue so I know that's what it was.

I'm starting over with a fresh epub from indesign but I'd like to learn from this novice mistake. What caused the table of contents to become content in the ebook? Attached is the new page I created (unedited)?