Definition of «black border»

The phrase "black border" refers to a thin line or boundary around something, like a picture or document, that is colored black.

The only thing I'm not so sure bout is the thick black border around everything, I think I'd prefer it just white! (polienne.com)
These letters have a thick black border around them, so they are easy for your students to cut them out themselves. (uniqueteachingresources.com)
They all seem to have nice screens with black borders no matter the OS. (bgr.com)
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