css how to style 3csup 3e

1/* Formatted from source to be a copy/pasted quickly. */
2
3sub, sup {
4  font-size: 75%;
5  line-height: 0;
6  position: relative;
7  vertical-align: baseline;
8}
9
10sup {
11  top: -0.5em;
12}
13
14sub {
15  bottom: -0.25em;
16}