Select nth-child across multiple parents

Question

I have the following markup:

    

        
one
        
two
    
    &         


        
                      

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Answer 1

You can't do that with CSS selectors alone. :nth-child() and sibling combinators are limited to children/siblings sharing the same parent only, as implied by their names, and CSS selectors cannot account for such variations in parent-child structure, nor is there anything like an :nth-grandchild() selector (even :nth-match() from Selectors 4 limits itself to elements sharing the same parent only).

Of course with something like jQuery it becomes trivial: $('.foo li:eq(0), .foo li:eq(2)') Otherwise you'll have to mark the first and third li elements explicitly using classes or IDs, and then select them.

Answer 2

You could use the even and odd selectors.

li:nth-child(odd) {
  color: red;
}
li:nth-child(even) {
  color: white;
}