.class_tit_z {
    float: left;
    height: auto;
    margin: 0 auto;
    width: 1270px;
}
.class_warp .select_sort {
    height: 30px;
    margin: 12px 0 0;
    position: absolute;
    right: 25px;
    top: -70px;
    width: 130px;
    z-index: 10;
}
.class_warp .select_txt {
    color: #5A5957;
    float: left;
    font-family: "楷体_GB2312";
    font-size: 14px;
    height: auto;
    margin-bottom: 15px;
    margin-top: 15px;
    text-align: center;
    width: 1225px;
}
.class_warp .class_txt {
    color: #333333;
    float: left;
    font-family: "微软雅黑";
    font-size: 22px;
    height: auto;
    margin: 0 auto 10px 280px;
    width: 800px;
}
.main_warp {
    margin-bottom: 10px;
}
ul, li {
    list-style-type: none;
}
.select_box {
    background: url("/resources/images/select.png") no-repeat scroll 0 0 transparent;
    border: 1px solid #FFFFFF;
    height: 27px;
    padding-left: 10px;
    padding-right: 20px;
    position: relative;
    width: 100px;
}
.select_box span {
    cursor: pointer;
    display: block;
    height: 25px;
    line-height: 25px;
    overflow: hidden;
    width: 100%;
}
.select_box ul li {
    cursor: pointer;
}
.son_ul {
    background: none repeat scroll 0 0 #FFFFFF;
    border: 1px dashed #CCCCCC;
    left: -1px;
    position: absolute;
    top: 25px;
    width: 130px;
}
.son_ul li {
    display: block;
    line-height: 25px;
    padding-left: 10px;
    width: 120px;
}
.son_ul li.hover {
    background: none repeat scroll 0 0 #CCCCCC;
}
.class_tit img {
    vertical-align: middle;
}
.control_ul {
    bottom: 10px;
    height: 20px;
    left: 35%;
    position: absolute;
    text-align: center;
    width: 30%;
}
.control_ul li {
    display: inline-block;
    padding: 0 2px;
}
.control_ul a {
    background-color: #6A6A6A;
    background-position: 0 -880px;
    background-repeat: no-repeat;
    border-radius: 8px 8px 8px 8px;
    cursor: pointer;
    display: block;
    height: 8px;
    opacity: 0.8;
    overflow: hidden;
    white-space: nowrap;
    width: 8px;
}
.slide_ul img {
    width: 100%;
}
.control_ul_checked a {
    background: none repeat scroll 0 0 #FFFFFF;
}
#index_slide_left {
    background: url("/resources/images/img_play_all.png") repeat scroll -24px -601px transparent;
    cursor: pointer;
    display: none;
    height: 38px;
    left: 5%;
    position: absolute;
    top: 45%;
    width: 20px;
}
#index_slide_right {
    background: url("/resources/images/img_play_all.png") repeat scroll -24px -563px transparent;
    cursor: pointer;
    display: none;
    height: 38px;
    position: absolute;
    right: 5%;
    top: 45%;
    width: 20px;
}
#index_slide_left:hover {
    background: url("/resources/images/img_play_all.png") repeat scroll 0 -563px transparent;
    cursor: pointer;
    height: 38px;
    left: 5%;
    position: absolute;
    top: 45%;
    width: 20px;
}
#index_slide_right:hover {
    background: url("/resources/images/img_play_all.png") repeat scroll 0 -601px transparent;
    cursor: pointer;
    height: 38px;
    position: absolute;
    right: 5%;
    top: 45%;
    width: 20px;
}
.student a {
    float: left;
    margin-right: 2px;
}
.browser_tips {
    background: none repeat scroll 0 0 #02C363;
    color: #FFFFFF;
    font-size: 14px;
    height: 43px;
    line-height: 43px;
    text-align: center;
    width: 100%;
}