The amount of post-processing does not work at the edges of the screen

I am creating a game and decided to make an outline shader for objects. After I made the material and superimposed it on the post process volume, I got the desired result, but I found that when expanding the screen, the post process volume and outline shader do not work. I do not know if this will be seen by players with different monitor resolutions or not. Maybe I’m misunderstanding something, but I haven’t found an answer to this question on YouTube. If someone understands what the problem might be, then please help🙏

I kind of attached a screenshot.