How to Get Rid of Dotted Lines in a Word Document

1. Select both the paragraph above and the paragraph below the dotted line in question.
2. Click on arrow next to the “Border” button in the "Paragraph" section of buttons. The button is labeled with an image of a four-square table with dotted lines delineating every section except for the bottom, which is a thin, solid line.
3. Click the option “No border.”