body
{
	background-color: rgb(50,50,50);
	background-repeat: no-repeat;
	background-size: cover;
    background-attachment: fixed;
	background-position: center center;
}

html,body
{
    height: 100%;
    padding: 0;
    margin: 0;
}

/* Ecran central */

.central
{
	text-align: center;
	position: absolute;
	top: 0px;
	left: 0px;
	right: 0px;
	bottom: 0px;
	overflow: auto;
    font-size: 0;
}

.central .aligner
{
	width: 0px;
	height: 100%;
}

.central .aligner,
.central > .content
{
	display: inline-block;
	vertical-align: middle;
}