body {
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	background-color:#f0ecf0;
}
.centrartabla {
	position:absolute;
	top:50%;
	left:50%;
	width:987px;
	height:554px;
	margin-left:-494px;
	margin-top:-277px;
	background-color:#f0ecf0;
}