Apply style to all contained elements and the element itself

Question

In a CSS stylesheet, I would like to apply a style to all descendants of an element (identified by id="outer"), as well as the element itself. Is there a more succinct or DRY way to do it than this:

#outer, #outer * {
    border: medium solid;
}

Answer 1

No. There isn't. That is as succinct as it gets.