* {
   	margin:0;
	padding:0;
	border: 0;
}

body {
	/*para centralizar horizontal...*/
	background: #FFF;
	display: table;
	margin: 0 auto;
}

.floatingCell{
	/*para centralizar vertical...*/
	_position: absolute;
	display: table-cell;
	vertical-align: middle;
}
.mainContent {
	display: table;
}