Hi, I need help.

I am still learning Calibre. To create an elegant, small line between my chapter number and my character’s name at the chapter opener, is it better to use a png of a small line, or is it ok to use a Bergamot Ornament typeface?
Selecting the tilde ~ gives a nice little line in Bergamot Ornament. But I’m worried that all epub readers will strip out the Bergamot Ornament typeface. I see these lines with tapered ends in other epubs. Are they using images? Thanks!!