Which two properties must you specify in a CSS3 @font-face rule?

Which two properties must you specify in a CSS3 @font-face rule?

• A. font-weight and src
• B. font-family and src
• C. font-family and font-style
• D. font-family and font-weight

Answer: (B)

Defining a custom font with @font-face hinges on giving the font a name and providing its data. The font-family descriptor assigns the name you’ll use in your CSS to refer to this font, and the src descriptor tells the browser where to load the font file from (the actual font data). Without a font-family, there’s no handle to apply the font anywhere in your styles; without src, there’s no font data for the browser to download and render. The other descriptors, like font-weight and font-style, describe variations of a font-family and are optional—you’d add them in separate @font-face blocks to supply bold, italic, or other styles. So the essential pair is font-family and src.