Blurry outline on sides and bottom of animation render

I’ve spent the last day and a half making this animation so don’t make fun! haha

I can’t quite figure out what is going on with the weird green blurry bits on the sides and bottom of this render, it gives a strange kind of frame to the image, but I don’t want it there. Does anyone know what to do about it?
Since this animation I’ve changed up the camera angle to try to get less reflection of the hdri, but it doesn’t seem to do much.

Is this Eevee or Cycles?

I had an Eevee issue where the render had shadows at the edges of the frame. The solution was to enable the ‘Overscan’ option in the Eevee render settings ‘Film’ section:

That seems to have fixed the problem. Thank you so much!