selectors

1h1 {
2  color: red;
3}
4
5In this CSS code example that sets the color of all h1s to red 
6the "h1" is the selctor because we are applying this style to 
7the h1s.

1/* Any Element With Class Title */
2.title {
3}
4
5/* Any Element With Id Title  */
6#nav {
7}
8
9/* Any Element With Tag Title  */
10div {
11}
12
13/* Any Element With Tag Title  */
14h2 {
15}