CSS refer to every odd nested child?

Question

I\'m trying to make a comment system where nested comments have zebra background colors. (Blue bg replies to white bg replies to blue bg...)

Instead of referring to

Answer 1

Look for nth-child in the CSS reference, selectors section. It's used something like this:

tr:nth-child(even) {
   background: #cccccc;
}
tr:nth-child(odd) {
   background: white;
}

you don't have to apply different classes to alternating rows; CSS itself will distinguish even rows from odd rows.