* {
	margin: 0;
}

html, body {
	height: 100%;
}

#wrapper {
	min-height: 100%;
	height: auto !important;
	height: 100%;
	margin: 0 auto -4em; /* the bottom margin is the negative value of the footer's height */
}

#footer, #push {
	height: 4em; /* .push must be the same height as .footer */
}

.push1 {
	height: 1em;
}