To link to an external style sheet

  1. Switch to HTML code view
  2. Add the <LINK> tag, between the <HEAD> start and end tags, to each help file or Web page where you want to attach the style sheet. For example:
<link rel="stylesheet" type="text/css" href="../css/style.css" />

The value REL= "stylesheet" indicates that the target source is a style sheet, mime/type is the MIME type for the style sheet, and url is the address of the style sheet file.

Designing a style sheet