div#content {
	width: 100%;
}
body {
	background-color: black;
}
div#content p.pres {
	text-align: center;
	width: 40%;
	font-size: 18px;
	margin-left: auto;
	margin-right: auto;
	margin-top: 100px;
	vertical-align: middle;
	color: gold;

}

div#content p.dida{
	text-align: center;
	width: 40%;
	font-size: 18px;
	margin-left: auto;
	margin-right: auto;
	margin-top: 100px;
	vertical-align: middle;
	color: red;
}
div#content a.block{
	display: block;
	font-size: 18px;
	text-align: center;
	color: red;
}
div#content a.block:hover{
	display: block;
	font-size: 18px;
	text-align: center;
	color: gold;
}	
iframe{
	margin-left: auto;
	margin-right: auto;
	vertical-align: middle;
	display: block;
}

img{
		margin-left: auto;
	margin-right: auto;
	display: block;
}