Thank you so much for taking the time to look this over for me.
I'm afraid if I make a CodePen it will work perfectly fine, like your car when you take it to the mechanic. But I'm going to try.
Something I noticed is that when there was only the home page, everything worked fine, after adding the timeline for the second page, the problems started. Another thing I noticed is that the first time the page loads, it works fine, but if you load it again, the content will appear before the timeline starts.