1.* {
2.    margin: 0;
3.}
4.html, body {
5.    height: 100%;
6.}
7..wrapper {
8.    min-height: 100%;
9.    height: auto !important;
10.    height: 100%;
11.    margin: 0 auto -4em;
12.}
13..footer, .push {
14.    height: 4em;
15.}