CSS Selectors Guide:

If, however, you change that same property to a different value for a more specific instance of p, that change will override the 'general rule'. If you say p { font-family: Garamond}, all 'p's will have the font Garamond. BUT if you say li p {font-family: Verdana}, 'p's outside of 'li's will be in Garamond, and 'p's INSIDE 'li's will be in Verdana. ................
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