@charset "utf-8";
/* CSS Document */

/*解决导航栏不兼容，部分不显示*/
body {
    margin: 0;    min-width: 1400px;
    background: #ffffff;}



/* 全站通用 */
.kong10{ width:100%; height:10px; overflow:hidden;}
.kong15{ width:100%; height:15px; overflow:hidden;}
.kong20{ width:100%; height:20px; overflow:hidden;}
.kong25{ width:100%; height:25px; overflow:hidden;}
.mid{ width:1400px; margin:0 auto;}

.div1{float:left;border:0px solid blue;width:1230px;}
.div2{float:right;border:0px solid red;width:150px;margin-top:38px; padding-top:5px; }

/* 布局框架 */
body{ background-color:#ffffff;text-decoration:none;font-family:"微软雅黑", "宋体"; color:#333; font-size:14px; line-height:32px;}

/* 头部 */
.search_wrap{ width:229px; height:40px; float:right; margin-top:52px; padding-top:5px; padding-left:33px;}
.searchform {width:222px; height:34px;}
.input_text {width:178px; height:34px; line-height:34px; color:#999;  float:left; border: 1px solid #c2050e; padding-left:10px;}
.input_btn{ width:39px; height:36px; float:right;}
 .banner{ background-image:url(../images/math-logo.png); height:150px; width:100%; background-position:top center; background-repeat:no-repeat;}  


/* 导航 */

.nav{ background-color:#920f15; height:52px; width:100%;background-position:top center; background-repeat:no-repeat;margin-bottom:1px;}
.nav_btn{  width:155px; height:52px;float:left;  text-align:center;}
.nav_btn a{color:#FFF; font-size:18px; line-height:52px;}
.sub_nav_btn{ width:155px; display:none; position:relative; z-index:999;}
.see { display:block;}
.nav_btn:hover{ background-image: url(../images/nav_hover-1.jpg); background-repeat:repeat-x;}
.nav_btn_active{ background-image: url(../images/nav_hover-1.jpg); background-repeat:repeat-x;}
.sub_nav_btn li{ width:155px;overflow:hidden;text-align:center; height:42px;  font-size:14px;line-height:42px; height:42px; color:#fff; background-color:#c2050e; }
.sub_nav_btn li:hover{ background-color:#920f15; color:#F00;}














/* banner轮播图片 */
/*banner*/

.ibanner {
    width: 100%;
    overflow: hidden;
    position: relative;}

.ibanner .hd {
    height: 18px;
    overflow: hidden;
    position: absolute;
    left: 15%;
    bottom: 30px;
    z-index: 1;}

.ibanner .hd ul {
    overflow: hidden;
    zoom: 1;
    float: left;}

.ibanner .hd ul li {
    float: left;
    width: 12px;
    height: 12px;
    line-height: 12px;
    text-align: center;
    border-radius: 50px;
    background: #fff;
    cursor: pointer;
    opacity: 0.8;
    margin: 3px 6px 0 0;}

.ibanner .hd ul li.on {
    background: none;
    opacity: 1;
    color: #fff;
    width: 12px;
    height: 12px;
    border: #990000 3px solid;
    margin: 0 6px 0 0;}

.ibanner .bd {
    position: relative;
    height: 100%;
    z-index: 0;}

.ibanner .bd li {
    zoom: 1;
    vertical-align: middle;
    position: relative
;}

.ibanner .bd li h1 {
    position: absolute;
    bottom: 80px;
    left: 15%;
    background: url(../images/tt_bg.png);
    font-size: 24px;
    color: #ffffff;
    padding: 15px 25px;}

.ibanner .bd img {
    width: 100%;
    display: block;}

.ibanner .prev,
.ibanner .next {
    position: absolute;
    left: 3%;
    top: 50%;
    margin-top: -25px;
    display: block;
    width: 45px;
    height: 80px;
    background: url(../images/slider-arrow.png) -120px 5px no-repeat;
    filter: alpha(opacity=50);
    opacity: 0.5;}

.ibanner .next {
    left: auto;
    right: 3%;
    background-position: -2px 5px;
    width: 45px;
    height: 80px;}

.ibanner .prev:hover,
.ibanner .next:hover {
    filter: alpha(opacity=100);
    opacity: 1;}

.ibanner .prevStop {
    display: none;}

.ibanner .nextStop {
    display: none;}















/* 尾部 */
.footer{  width:100%; padding-top:20px; padding-bottom:30px;background-color:#920f15;}
.footer_cnt{ width:500px; margin:0 auto;color:#fff;}