/* CSS Document */
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/*头尾*/
iframe{margin:0 auto;}
q:before,q:after {content:'';}
abbr,acronym {border:0;}
address,caption,cite,code,dfn,em,th,var {font-weight:normal; font-style:normal;}   
a,
a:link,
a:visited{color:#333;text-decoration:none;}
a:hover,a:active,a:focus {color:#c00;text-decoration:underline;}
.cWhite,.cWhite:visited,.cWhite a{color:#fff;}
.cYellow,.cYellow:visited{color:#ff0;}
.cGreen,.cGreen:visited{color:#008000;}
.cGray,.cGray:visited,.cGray a{color:#333;}
.cBlack,.cBlack:visited,.cBlack a{color:#000;}
.cBlue,.cBlue:visited,.cBlue a{color:#1E50A2;}
.cRed,.cRed:visited,.cRed a{color:Red;}
.fB{font-weight:bold;}
.fI{font-style: italic;}
.f12px{font-size:12px;}
.f14px{font-size:14px;}
.fl{float:left;}
.fr{float:right;}
.cl{clear:both;font-size:1px;width:1px;height:0;visibility:hidden;margin-top:0px!important;*margin-top:-1px;line-height:0}/*ie and firefox1.5 updata (visibility 属性设置元素是否可见或不可见)   */	
.hidden{display:none;}
.unLine,.unLine a{text-decoration:none;}
.noBorder{border:none;}
.clear {clear:both; height:0; overflow:hidden; display:block;}
.tLeft{text-align:left}
.tRight{text-align:right}
.tCenter{text-align:center}
.txtIndent{text-indent:2em}
.blank_1,.blank_2,.blank_3,.blank_5,.blank_7,.blank_8,.blank_10,.blank_15,.blank_20{margin:0 auto;font-size:1px;clear:both;display: block;overflow: hidden;}
.blank_8{height:8px;}
.leftimg{border:1px solid #CCCCCC;}
/*清除内div浮动撑大外div*/
.clearfix:after{content: ".";display:block;height:0;clear:both;visibility:hidden;}
/* Hides from IE-mac \*/
* html .clearfix {height: 1%;}
/* End hide from IE-mac */ 
/*=================================公用背景=================================*/	
#nav h1,
#channelSearch .search,
#channelSearch .Keywords,
#channelSearch .Keywords .rss,
#nav51edu,
#nav51edu li,
#nav51edu .nav51eduA h2,
#nav51edu .nav51eduB h2,
#nav51edu .nav51eduC h2{background:url(../images/chnnelBg.png) no-repeat;}	
/*=================================全站top=================================*/
#top{width:948px;margin:0 auto 1px;height:33px;border:1px solid #c7c7c7;border-top:none;background:url(../images/chnnelBg2.jpg) repeat-x 0 0;}
#top .login{width:460px;float:left;padding-top:4px;}
#top .home{width:453px;float:right;padding:12px 10px 0 0;text-align:right;}
/*=================================全站导航=================================*/
#nav{width:950px;margin:1px auto 0;height:54px;border-top:1px solid #dededd;}
#nav h1{float:left;width:148px;background-position:-370px -106px;padding:4px 0 0 22px;}
#nav51edu{float:right;width:780px;overflow:hidden;background-position:779px -144px;}
#nav51edu .nav51eduA,
#nav51edu .nav51eduB,
#nav51edu .nav51eduC{overflow:hidden;float:left;padding-top:11px;}
#nav51edu .nav51eduA{width:310px;}
#nav51edu .nav51eduB{width:240px;}
#nav51edu .nav51eduC{width:230px;}
#nav51edu .nav51eduA ul,
#nav51edu .nav51eduB ul,
#nav51edu .nav51eduC ul{float:left;margin-top:2px;}
#nav51edu .nav51eduA ul{width:242px;overflow:hidden;}
#nav51edu .nav51eduB ul{width:200px;overflow:hidden;}
#nav51edu .nav51eduC ul{width:186px;overflow:hidden;}
#nav51edu .nav51eduA ul,
#nav51edu .nav51eduB ul,
#nav51edu .nav51eduC ul{float:left;}
#nav51edu li{float:left;text-align:left;line-height:19px;background-position:-468px -174px;padding:0 7px;margin-left:-1px;}
#nav51edu .nav51eduA h2{width:68px;height:44px;background-position:-180px -109px;float:left;}
#nav51edu .nav51eduB h2{width:40px;height:44px;background-position:-256px -109px;float:left;}
#nav51edu .nav51eduC h2{width:44px;height:44px;background-position:-307px -109px;float:left;}
#nav51edu .nav51eduA li.a1{width:36px;}		

/*=================================全站footer=================================*/
#footer{width:950px;margin:25px auto 0;height:134px;}
.about51edu{background:#eee;border:1px solid #e2e2e2;height:19px;padding-top:8px;font-size:13px;text-align:center;}
.about51edu li{color:#666;}
.copyRight{padding-top:8px;line-height:20px;text-align:center;}