I am trying to display photos on a website that has a black / dark gray gradient background. I am having a hard time making the photos stand out. I have tried adding shadows but they get lost in the background. I have also tried borders, but they tend to look cheesy and forced.
Are there any alternative techniques besides the ones I have mentioned? (Example implementations are appreciated). Key words to help me search on the web would also be nice as I am new to these concepts and am having difficulty finding relevant material.