body {
	background:#373737;
}

#logo{ 
	display:block;
	width:341px; 
	height:90px;
	margin:auto;
	position:absolute;
	top:50%;	
	left:50%;
	margin-top:-45px;
	margin-left:-170px;
    -webkit-animation: fadein 4s; /* Safari, Chrome and Opera > 12.1 */
       -moz-animation: fadein 4s; /* Firefox < 16 */
        -ms-animation: fadein 4s; /* Internet Explorer */
         -o-animation: fadein 4s; /* Opera < 12.1 */
            animation: fadein 4s;
}

@keyframes fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Firefox < 16 */
@-moz-keyframes fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Safari, Chrome and Opera > 12.1 */
@-webkit-keyframes fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Internet Explorer */
@-ms-keyframes fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Opera < 12.1 */
@-o-keyframes fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}