One of the pesky problems with  ~/ .html, is the fact that the same page viewed by different folks' Browsers don't necessarily look the same. 
This can be for several reasons: 
Which Browser one is using, or the Browser's version. 
And, what Font Size the Browser is Set to!    (Preferences) 

One popular solution, is to substitute ~ .gif images of the text where the author desires uniformity. Of course, this initially slows the page. 

Another solution is the use of Dynamic Fonts. This is where a Page requires a specific Font Set which must be loaded into the Browser, either from one's local HD or the server. As with the ~ .gif solution, it takes time; also as one scrolls the page there is a definite latency. 

I have chosen to use Standard Text for my pages. There are enough Images, with their attendant overhead, without adding even more.