.yongyaozt{

	background: #f5f5f5;
	margin: 0px auto 20px;
	padding: 0px 0 20px;
}



/*科普视频banner图*/
.yybanner {
	width: 100%;
	margin: 0 auto;
	height: 200px;
	background: url(/style/images/yiliaozhongxin/banner.png) no-repeat;
	background-size: 100% 100%;
	float: left;
	margin-bottom: 21px;
}


.yybanner p {
	font-size: 23px;
	width: 1200px;
	margin: 0 auto;
	color: #fff;
	line-height: 200px;
	letter-spacing: 1px;
}


/*导航条开始*/
.yyposition{

	clear: both;
	width: 1200px;
	margin: 0 auto;

	margin-bottom: 21px;
}

/*导航条结束*/

/*科普视频banner图结束*/



.yystart1{

	width:1200px;
	height:116px;
	background:rgba(255,255,255,1);
	border-radius:5px;
	margin: 0 auto;

}

.yystart2{

	width: 1200px;
	margin: 20px auto 40px;
	letter-spacing: 1px;

}



.yystart2 img{

	width: 1200px;
	height: 629px;

}


h1{
	font-size: 20px;
	height: 50px;
	line-height: 50px;
	margin-left: 15px;
}

.yystart1  p {
	margin-left: 15px;
	margin-bottom: 10px;

}

.yystart1 p span:nth-last-child(2) {
	margin-right: 10px;
}

.yystart1 p img {
	margin-right: 10px;
	position: relative;
	top: 2px;
}

.yystart2 iframe{
	width: 1200px;
	height: 629px;
}