HTML doesn't offer as clean a solution for vertical lines as it does for horizontal lines -- a vertical equivalent to the Set your image up within your text and add a "style" attribute tag.

To add stylistic horizontal lines under each heading, rather than applying the formatting directly to the text on the Word document canvas, use Microsoft Word's styles tool. Right-click the ...

Include a CSS style parameter in your HR tag to modify the default color to black. Use an HTML or text editor to open the HTML page in which you want the line to appear. Type the following code ...