Pls explain this part of meyer's reset in details and is it useful to keep this while it's not supperted in IE?

Pls explain this part of meyer's reset in details and is it useful to keep this while it's not supperted in IE?

I think this is not supported by below IE8 then what is the benefit to use this kee开发者_开发问答p this in css reset.

and even if we keep then what about IE?

blockquote:before, blockquote:after,
q:before, q:after {content: "";}
blockquote, q {quotes: "" "";}

There is nothing wrong with progressive enhancement. For example, use this for the browsers it works for, and for IE7 and below use conditional stylesheets and stick a background image that looks like quotes or something. Or leave it without quotes and put it in italics or whatever will keep it making some sort of sense.

Things don't need to be ideal for the more limited browsers as long as the visitors using them can't tell that something is actually wrong. As long as it's usable and makes sense for them then feel free to use any cool tricks that only show up in superior browsers.