/* The “descendant” combinator. */
/* Only paragraphs inside the header. */
header p { color: blue; }

/* The “child” combinator. */
/* Only immediate children paragraphs of `body`. */
body > p { color: gray; }

/* “Adjacent sibling” combinator. */
/* Only immediately preceded by another paragraph. */
p + p { color: teal; }

/* “General sibling” combinator. */
/* Only paragraphs following `h2`. */
h2 ~ p { color: green; }