There will always be a few of each type, serif, sans serif, italic, and bold, as well as monospaced and proportional. Your browser will select what it thinks matches what it is being asked to display. Compare browsers and you'll see how they each interpret the same page. Any given page that is coded in HTML (and not just a bunch of text saved as an image and posted on a page) is rarely going to appear the same in different browsers.

SRS