Generic font-family?

[gasell]

My stylesheet validates but I get warning: You are encouraged to offer a generic family as a last alternative.
I have verdana set as font, which fonts should I add?

[Longhaired Genius]

The generic font names are serif, sans-serif, cursive, fantasy, and monospace. If your first choice is verdana you should add sans-serif.

[gasell]

I should add sans-serif font? I tried adding arial but that didn't do it.

[SuzyUK]

I should add sans-serif font

Yes the actual words "sans-serif"

when you specify a list of fonts in your CSS.. e.g.
{font-family: verdana, tahoma, arial;}

You are offering/suggesting to the browser/UA a choice of which font to use.. if it doesn't have any of the specified fonts installed it needs to know which "generic" family you would like to display which will then be based on the users preference for that family. In this case they all belong to the "sans-serif" family so the list of choices should be:

{font-family: verdana, tahoma, arial, sans-serif;}

[gasell]

Thank you so much!