A good point! 

By "set these values previously", Mark means "set these values further up
the document tree".

For example, if you set "font-weight: bold" on a container (like a <div>
element), this will be inherited by elements within that container (like
content within a <p> element). In these particular circumstances you would
set "font-weight: normal" on the <p> element to turn the bold off.

However, as Mark says, in most circumstances you would not need to specify
"font-weight: normal" on each element.

More on the document tree (critical in coming to terms with CSS) here:
http://css.maxdesign.com.au/selectutorial/document_tree.htm

Russ


> One more thing:
> 
>  font-variant: normal;
>  font-style: normal;
>  font-stretch: normal;
>  font-size-adjust: none
> 
> These are all completely redundant because they are the default values.
> Unless you have reset these values previously, you don't need to set them to
> their default values.

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