to work by appending it to your custom CSS stylesheet with the Firefox dev tools. So that's exactly where it would be if you put it in there yourself. There is nothing causing any inheritance issues here.
Did you perhaps type it in as:
.comment.header {background: color}
That's a really easy mistake to make, and it means something very different from the first rule since it refers to an element with both comment and header as class names--which doesn't exist.
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.comment .header {background: color}to work by appending it to your custom CSS stylesheet with the Firefox dev tools. So that's exactly where it would be if you put it in there yourself. There is nothing causing any inheritance issues here.
Did you perhaps type it in as:
.comment.header {background: color}That's a really easy mistake to make, and it means something very different from the first rule since it refers to an element with both comment and header as class names--which doesn't exist.