This example shows a page of HTML elements with CSS Reset and CSS Fonts applied.
When CSS Fonts is included in a page it applies a baseline font treatment to all HTML elements. This baseline is Arial (with fallbacks) at the equivalent of 13px size and 16px line-height. This example shows what that looks like.
Because CSS examples are susceptible to other CSS on the page, this example is only available in a new window at the above link.