Hiding code block that appears on page. Launching Website Soon Please Help!

I recently added a code block to the top of select sections in my Mojave template in order to add a "section" to my primary navigation menu. I'm using only one index page and multiple sections to create a long scrolling website. The issue I have is that the code is visible on the pages and I want to hide it. How can I do this? PS:making the body text overlay transparent would work; however, it also makes the body text on other pages transparent which I do not want to happen. Perhaps a CSS to make body overlay transparent on select pages only? Please help.