I want to know a simple thing:

when setting up a style that is inherited by all its children, is it recommended most specific? (even if you don't care others having this style)

Structure: html > body > parent_content > wrapper > p

• I don't care having parent_content or wrapper having the style
• I do care changing the html or body style (or all p)

So what should I use?

#parent_content{
    color:#555;
}

#parent_content p{
    color:#555;
}

#wrapper{
    color:#555;
}

...

Also, some links to tutorials about this would be great