#menu { position: fixed; right: 20px; top: 50%; width: 90px; margin: -160px 0 0; padding: 0; list-style-type: none; z-index: 70;}
#menu li { margin-top: 10px; font: 14px "Microsoft Yahei";}
#menu a { display: block; padding: 10px 0; background-color: #fff; color: #0074EA; text-align: center; text-decoration: none;}
#menu .active a { color: #fff; background-color: rgb(0, 116, 234);}
.section { text-align: center; font: 18px "Microsoft Yahei"; color: #fff;}
.screen-main,.science-inner,.famous-inner,.social-inner,.net-inner{ 
	position: relative; 
	width: 1280px; 
	height: 720px; 
	margin: 0 auto;
	overflow: hidden;
}

.science-inner {
	background: url(../../images/page12/bg-kj.png) center no-repeat;
}
.famous-inner {
	background: url(../../images/page12/renwu-bg.png) center no-repeat;
}
.social-inner { 
	background: url(../../images/page12/bj-so.png) center no-repeat;
}
.net-inner { 
	background: url(../../images/page12/bj-net.png) center no-repeat; 
}





.screen-main .shi1 {
	position: absolute;
	display: block; 
	width: 100%; 
	height: 100%; 
	left: 0px; 
	top: -900px; 
	z-index: 4; 
}


.science-inner .stimg3, .famous-inner .faimg2,.social-inner .soimg4{
	position: absolute; 
	display: block; 
	width: 100%;
	height: 100%;
}

.net-inner a { text-decoration: none; color: #00a0e9; float: left; position: absolute; display: inline-block; white-space: nowrap }
.net-inner a:hover { color: #054b6b }