.pack_con {
    height: 50px;
    line-height: 50px;
    font-size: 24px;
    padding-left: 20px;
    border-radius: 5px;
    background-color: #efefef;
    color: #11a58d;
}

/* 轮播图 start */
.box3 {
    position: relative;
}

.box3 #teacher {
    width: 825px;
    height: 475px;
    position: relative;
    margin: 0px auto;
    overflow: hidden;
}

.box3 #teacher #czimg ul {
    width: 9999px;
    position: absolute;
    top: 0;
    left: 0;
}

.box3 #teacher #czimg ul li {
    float: left;
    overflow: hidden;
    width: 825px;
}

.box3 #teacher #czimg ul li div {
    overflow: hidden;
    width: 200px;
    height: 610px;
    float: left;
    text-align: center;
    margin-right: 5px;
}

.box3 #teacher #czimg ul li div img {
    width: 198px;
    height: 393px;
    margin-top: 47px;
    text-align: center;
}

.box3 #czbutton a {
    display: block;
    width: 54px;
    height: 100px;
    position: absolute;
    top: 230px;
}

.box3 #czbutton #czleftbut {
    background: url(../gf/left.png) center center no-repeat;
    left: -20px;
}

.box3 #czbutton #czrightbut {
    background: url(../gf/right.png) center center no-repeat;
    right: -20px;
}


.f2 {
    font-size: 32px;
}

/* 轮播图 end */



/* 资料内容开始 */
.video_con {
    margin-top: 20px;
}

.video_l {
    background-color: #efefef;
    border-radius: 5px;

}

.video_l_fl {
    width: 240px;
    height: 380px;
    /* background-color: #efefef; */
    border-radius: 5px;
}

.video_l_fl h3 {
    padding: 29px 5px 10px 15px;
    border-bottom: 1px solid #dcdcdc;
    color: #333333;
    position: relative;
    font-size: 21px;
    font-family: 'Microsoft Yahei';
    margin: 0 5px;
}

.video_l_fl ul {
    padding-top: 18px;
    padding-bottom: 30px;
}

.video_l_fl ul li {
    font-size: 17px;
    position: relative;
    cursor: pointer;
    height: 50px;
    line-height: 50px;
    margin-bottom: 12px;

}

.video_l_fl ul li a {
    /* border-top-right-radius: 50px;
    border-bottom-right-radius: 50px; */
    padding-left: 30px;
    box-sizing: border-box;
}


.video_l_pt {

    background-color: #efefef;
    /* overflow: hidden; */
    margin-top: 28px;
    border-radius: 5px;
    height: 200px;

}

.video_l_pt .lianxi {
    color: #fff;
    background-color: #e9b718;
    text-align: center;
    height: 50px;
    line-height: 50px;
    font-size: 20px;
    border-radius: 5px;
}

.video_l_pt .jiaoliu {
    margin-top: 35px;
    position: relative;
    padding-left: 10px;
}

.video_l_pt .jiaoliu::before {
    display: block;
    content: "";
    width: 38px;
    height: 38px;
    background: url(../images/icon_wx.png) center center no-repeat;
    position: absolute;
    left: 20px;
    top: -5px;
    background-size: 38px 38px;
}

.video_l_pt .dabao::before {
    display: block;
    content: "";
    width: 38px;
    height: 38px;
    background: url(../images/icon_qq2.png) no-repeat;
    position: absolute;
    left: 20px;
    top: -5px;
}

.video_l_pt .dabao {
    margin-top: 30px;
    position: relative;
    padding-left: 30px;

}

.video_l_pt .jiaoliu a {
    display: block;
    width: 100%;
    text-align: center;
    font-size: 20px;
    color: #444;
    padding-left: 4px;
}

.video_l_pt .dabao a {
    display: block;
    width: 100%;
    text-align: center;
    font-size: 20px;
    color: #444;
}

.video_l_pt ul {
    width: 190px;
    height: 165px;
    background: url(../images/line.png) no-repeat center center;

}

.video_l_pt ul li {
    float: left;
    height: 83px;
    width: 95px;
    text-align: center;
}

.video_l_pt ul li:hover {
    box-shadow: 0 0 10px #ccc;
}

.video_l_pt ul li a {
    position: relative;
    width: 100%;
    height: 100%;
    display: block;
    font-size: 14px;
}

.video_l_pt ul li a:hover {
    text-decoration: underline;

}

.video_l_pt ul li a.zl_c {
    color: #1eaadb;
}

.video_l_pt ul li a.zl_c i {
    background: url(../images/xz.png) no-repeat;
}

.video_l_pt ul li a.sp_c {
    color: #bc1790;
}

.video_l_pt ul li a.sp_c i {
    background: url(../images/db.png) no-repeat;
}

.video_l_pt ul li a.db_c {
    color: #fff;
}

.video_l_pt ul li a.db_c i {
    background: url(../images/dy.png) no-repeat center center;
}

.video_l_pt ul li.dy {
    background-color: #20b59c;
}

.video_l_pt ul li a.pj_c {
    color: #88bb24;
}

.video_l_pt ul li a.pj_c i {
    background: url(../images/pj.png) no-repeat;

}

.video_l_pt ul li a.jl_c {
    color: #20b49c;
}

.video_l_pt ul li a.jl_c i {
    background: url(../images/js.png) no-repeat;

}

.video_l_pt ul li i {
    display: block;
    width: 35px;
    height: 32px;
    margin: 10px auto;


}

.video-r {
    width: 910px;
}

.video_l_fl li {
    /* width: 150px; */
}

.video_l_fl li a {
    display: block;
    width: 100%;
    color: #333333;
    height: 100%;
    line-height: 50px;
    font-size: 20px;
}

.video_l_fl li a.active {
    background-color: #11a58d;
    color: #fff;
    border-radius: 5px;

}

/* .video_l_fl li:nth-child(2) a.active
{
    background-color: #fdc515;
    color:#fff;

}
.video_l_fl li:nth-child(3) a.active
{
    background-color: #33aaf9;
    color:#fff;

}
.video_l_fl li:nth-child(4) a.active
{
    background-color: #44d570;
    color:#fff;

} */

.video_r_nav {
    margin-top: 55px;
}

.opensource_inner {
    padding: 0 20px;
    box-sizing: border-box;
    overflow: hidden;
}

.opensource_inner .download_b {
    height: 40px;
    line-height: 40px;
    background-color: #fef1f5;
    font-size: 18px;
    padding-left: 20px;
    border-radius: 6px;
    margin-top: 32px;
}

.download_b a {
    display: block;
    font-size: 14px;
    color: #fb6b91;
    border: 1px solid #fb6b91;
    height: 26px;
    line-height: 26px;
    width: 86px;
    text-align: center;
    border-radius: 5px;
    margin-top: 6px;
    margin-left: 20px;
    font-weight: 700;
}

.opensource_con {
    background-color: #fff;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

.opensource_kj {
    display: flex;
    justify-content: space-between;
    box-sizing: border-box;
    padding: 10px 0 0 8px;
}

.opensource_kj .kj1 {
    /* margin-right: 20px; */
}

.opensource_kj ul li {
    /* border-bottom: 1px dashed #ccc; */
    padding: 17px 0 10px 0;
    width: 300px;
    /* position: relative; */
}

.opensource_kj ul li::before {
    display: block;
    content: "";
    width: 280px;
    border-bottom: 1px dashed #ccc;
    position: absolute;
    bottom: 0;
    left: 0;
}


.video_r_nav h1 {
    font-size: 24px;
    color: #fff;
    background-color: #fd6272;
    font-weight: 400;
    padding-left: 20px;
    width: 240px;
    height: 50px;
    border-radius: 5px;
    line-height: 50px;
    box-sizing: border-box;
}

.video-r .video_r_nav {
    /* display: none; */
}

.video-r .show {
    display: block;
}

.video_r_nav_con {
    display: none;
}

.video_r_nav_con .sm_con {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #fff;
    padding: 16px 0;
    border-radius: 8px;
    margin-bottom: 20px;
}

.sm_con h2 {
    font-size: 30px;
    position: relative;
}

.sm_con h2::before {
    display: block;
    content: "";
    background: url(../images/line_db.png) no-repeat;
    width: 910px;
    height: 1px;
    position: absolute;
    left: -300px;
    top: 57px;
}

.sm_text {
    margin-left: 45px;
}

.sm_text p {
    font-size: 24px;
    line-height: 2;
}

.sm_text p span {
    font-size: 30px;
    color: #fff;
    background-color: #fa6b91;
    padding: 0 5px;
    border-radius: 5px;
    margin: 0 5px;
}

.linux_l {
    border: 1px solid #fb6b91;
    display: inline-block;
    width: 235px;
    text-align: left;
    /* padding-left: 20px; */
    height: 28px;
    border-radius: 5px;
    margin-top: 5px;
    line-height: 2;
    font-size: 14px;
    color: #fb6b91;
    margin-left: 20px;
    font-weight: 700;
}

.linux_l a {
    color: #fb6b91;
    border: 1px solid transparent;
    margin-top: 0;
    margin-left: 0;
    width: 101px;
    padding-left: 15px;
}

.linux_l a img {
    margin-top: 5px;
    margin-right: 20px;
}

.linux_l span {
    color: #000;
    margin-left: 5px;
}

.html_l {
    border: 1px solid #fdc515;
    display: inline-block;
    width: 235px;
    text-align: left;
    /* padding-left: 20px; */
    height: 28px;
    border-radius: 5px;
    margin-top: 5px;
    line-height: 2;
    font-size: 14px;
    color: #fdc515;
    margin-left: 20px;
    font-weight: 700;
}

.html_l a {
    color: #fb6b91;
    border: 1px solid transparent;
    margin-top: 0;
    margin-left: 0;
    width: 100px;
    padding-left: 15px;
}

.html_l a img {
    margin-top: 5px;
    margin-right: 20px;
}

.html_l span {
    color: #000;
    margin-left: 5px;
}



/* html start */
.video_r_nav .html {
    background-color: #fdc515;
}

.opensource_inner .html_c {
    background-color: #fffae7;
}

.opensource_inner .html_c a {
    color: #fdc515;
    border: 1px solid #fdc515;
    width: 101px;
}

.opensource_kj ul {
    width: 100%;
    font-size: 0;
}

.opensource_kj ul li {
    display: inline-block;
    width: 300px;
    font-size: 12px;
    /* border-bottom: 1px dashed #ccc; */
    padding: 17px 0 10px 0;
    margin-right: 20px;
}

/* html end */

/* bigdata start */
.video_r_nav .bigdata {
    background-color: #33aaf9;
}

.opensource_inner .bigdata_c {
    background-color: #e9f6fd;
}

.opensource_inner .bigdata_c a {
    color: #33aaf9;
    border: 1px solid transparent;
    margin-top: 0;
    margin-left: 0;
    width: 101px;
    padding-left: 15px;

}

.download_l {
    display: inline-block;
    width: 235px;
    text-align: left;
    /* padding-left: 20px; */
    border: 1px solid #33aaf9;
    height: 28px;
    border-radius: 5px;
    margin-top: 5px;
    line-height: 2;
    font-size: 14px;
    color: #33aaf9;
    margin-left: 20px;
    font-weight: 700;
}

.download_l span {
    color: #000;
    margin-left: 5px;
}

.opensource_inner .bigdata_c a img {
    margin-top: 5px;
    margin-right: 20px;
}

/* bigdata end */

/* android start */
.video_r_nav .android {
    background-color: #44d570;
}

.opensource_inner .android_c {
    background-color: #ebfcef;
}

.opensource_inner .android_c a {
    color: #44d570;
    border: 1px solid #44d570;
}

/* android end */


/* 资料内容结束 */

.course_con {
    padding: 43px 0;
    padding-left: 100px;
    position: relative;
}

.course_con .title {
    font-size: 22px;
    color: #fd6272;
}

.course_con .jibie {
    font-size: 18px;
    color: #333333;
    margin-top: 31px;
}

.course_con .lianxi {
    font-size: 22px;
    color: #333333;
    margin-top: 31px;
}

.course_con .lianxi a {
    color: #13b7f6;
}

.course_con::after {
    display: block;
    content: "";
    background: url(../images/line_db.png) no-repeat;
    width: 910px;
    height: 1px;
    position: absolute;
    left: 0;
    bottom: 5px;
}

.img_con {
    margin-top: 45px;
}

.img_con img {
    margin-left: 62px;
}

.video_r_nav p {
    font-size: 16px;
    margin-top: 35px;
    padding-left: 23px;
}

.ly_ph {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 50px;
    overflow: hidden;
    position: relative;
    height: 100px;
}

.ly_ph .btn {
    display: block;
    width: 280px;
    height: 50px;
    background-color: #f4b541;
    line-height: 50px;
    text-align: center;
    margin: 0 auto;
    font-size: 24px;
    color: #fff;
    border-radius: 5px;
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -156px;
    padding: 0 20px;
    font-weight: 400;
}

.lianxi .ewmtoggle {
    position: relative;
}

.lianxi .ewmtoggle::after {
    content: '扫码加我微信';
    position: absolute;
    width: 180px;
    height: 216px;
    background: url(../bishe/images/ewm.png) bottom center no-repeat #fff;
    border-radius: 10px;
    top: 30px;
    box-shadow: 0 0 10px #aaa;
    line-height: 1;
    font-size: 20px;
    color: #3d3d3d;
    box-sizing: border-box;
    padding-top: 10px;
    overflow: hidden;
    display: none;
    left: -35px;
    z-index: 99;
    background-size: 180px auto;
    text-align: center;
}

.lianxi .ewmtoggle:hover::after {
    display: block;
}

.jiaoliu .ewmtoggle::after {
    content: '';
    position: absolute;
    width: 180px;
    height: 180px;
    background: url(../bishe/images/ewm.png) bottom center no-repeat #fff;
    border-radius: 10px;
    top: 30px;
    box-shadow: 0 0 10px #aaa;
    line-height: 1;
    font-size: 20px;
    color: #3d3d3d;
    box-sizing: border-box;
    padding-top: 10px;
    overflow: hidden;
    display: none;
    left: 30px;
    z-index: 99;
    background-size: 180px auto;
    text-align: center;
}

.jiaoliu .ewmtoggle:hover::after {
    display: block;
}