please help, how do I remove random black lines that are showing on all bounding boxes

[Optimistic_customers5EFE]

 I have hidden all options in "view" but there are still random lines that show up around the edges of bounding boxes. I cannot remove them. If I move the text or image, the lines go with them. The lines are all the same size and are in line the same way.

[Larry G. Schneider]

They look like Trim Marks from placed items. Can you show the Layer panel with the contents shown?

[Optimistic_customers5EFE]

Here is the project with the layer pannel. I have circled the lines in red.

 

[Ton Frederiks · Accepted solution]

Can you check (with an object selected) in the Appearance panel if the Crop Marks effect is applied?

[Larry G. Schneider]

Thanks Ton, I couldn't remember exactly how to apply them.

[Optimistic_customers5EFE]

THANK YOU so much, I dont know why they were applied but they are now gone.

[Ton Frederiks]

Good to hear that solved it.

First I thought it was the Mondrian effect, but Larry gave me the idea for the Crop Marks effect 🙂