InDesign creates lines around text when exporting it?

[Harun5C32]

I used the serial fuction InDesign has to offer, but whenever I export the PDF InDesign somehow creates a thin black line around the Text. Why is that?

This is how it looks like after exporting the PDF:

 

This is how InDesign previews it as:

[John Mensinger]

There are a lot of variable conditions when it comes to on-screen viewing of PDF. What viewer are you using? How does it look printed? 

[Harun5C32]

Hey, I'm viewing them through the browser. But it presists throughout all of them, kind of weird.

[Steve Werner]

Can you create a sample which shows the issue and save it as InDesign and PDF files? Post it on a service like Creative Cloud or Dropbox, and provide a link so we can test it.