This is a div with an id of d01. Its background should be a light purple and use Verdana or a fallback sans-serif font.

This is a p without an id. Its background should be a light green and use a serif font.

This is a p with an id of p01. Its bakground should be transparent (thus allowing the light purple to show through) and its font family should be the same as its parent element, overriding other values defined by lower-specificity rules.