Faint border around image boxes

[KerriC23]

I created an email today and included a bunch of event sponsors. For some reason, some of the logos have a faint box around the insertion box. It's very light but is coming across on the actual email as well. Not sure what is causing it. Added a screenshot below:  

[William_A]

Hello @KerriC23 ,

I'm not able to recreate the issue you're showing in the screencap in any of my email clients. Which client (and version if applicable) are you using to view the email?

[KerriC23]

Thanks for the reply, William. I figured it out. It was actually a combination of using a transparent/png logo with a not completely white body color. Once I double-checked the body color and did absolute white, it went away.  I guess my monitor screen isn't calibrated correctly. But it is solved.