I have used gradient tool on simple black lines to make them fade out as they reach the edge of the document. When I export the document to PDF the lines are simply black, no gradient whatsoever. I'm a beginner at this. I'm putting together something for a wedding, and really need to fix this pronto! HELP!
Version of InDesign? OS? Print or Export to PDF and settings used?
What sort of gradient did you apply? Some screen shots of the line in ID and the PDF would help.