Question

Why should you list more than one font if you are formatting some text using CSS?

Not every browser supports every font.
CSS will select the font that fits best on the page.
CSS will use different fonts when the page is refreshed.
All of the fonts will appear in the webpage.
PLZZ HELP ME IM TIMED

Answer 1

Because if one font is not available, it will fall back on the ones that are. By providing several, you have a higher level of control over what happens to the site if a browser does not support one of the fonts. The alternative is the browser deciding to use it's own default font as a fallback. This can result in the webpage looking weird.