I have created a newsletter in Word. On some pages I have used tables, which have a coloured in-fill and white keylines separating the columns and rows. The tables look fine in the Word file. I then convert the word file to an Acrobat .pdf.

When you open up the .pdf file, the white keylines then look as if they are thicker in some places, as if there are 2 lines on top of each other.

Does anybody know how to avoid this?

Thank you.