How to add vertical spacing between block elements, but not top and bottom

Question

Say I have a bunch of P, LI, or DIV elements, with nothing between them. I want to control the vertical spacing between them, so they don\'t fit so tightly. But I don\'t want

Answer 1

p, li, div {
    margin-bottom: 10px;
}
#parentID {
    margin-bottom: -10px;
}