What are these lines on my project and how do i get rid of them?

Hello! I was working on my project and all of a sudden all these annoying lines showed up on all of my components and objects, its very annoying to work with them, and would love to get ride of them! If someone more knowledgeable about this than I could give me a hand, that would be great! I have tried to “hide all guides” in the view menu, but that did nothing. By the way, I am using sketchup for web on my Mac.

Hit K again to turn off the back edges.

They are back edges not guides.

oh haha thanks!