.content{
    background: #1b1619;
}
.banner{
    width: 100%;
}
.tab ul li{
    width: 50%;
    color: #fff;
    float: left;
    text-align: center;
    padding-bottom: 5px;
}
.tab ul li img{
    width: 20px;
    margin-right: 5px;
}
.tab ul li.active{
   border-bottom: 1px solid #cea45a;
}
.tab .kf_c{
    clear: both;
    text-align: center;
}
.tab .kf_c>div{
    display: none;
}
.tab .kf_c>div:first-child{
    display: block;
}
.tab .kf_c img{
    width: 800px;
    margin-top: 30px;
}
.tab h1{
    padding: 20px 0 20px;
    color: #fff;
    text-align: center;
}


.course h1{
    color: #fff;
    text-align: center;
    border-bottom: 1px solid #3f3c36;
    padding-bottom: 20px;
    padding-top: 30px;
}

.course .course_content{
    overflow: hidden;
    margin-top: 20px;
}
.course .course_content .left{
    width: 48%;
    float: left;
    /* border-right: 1px solid #cea45a; */
    margin-left: 2%;
}
.course .course_content .left .item h6{
    font-style: 20px;
}
.course .course_content .left .item{
    background: url('../img/left_bg.png?t=20210930');
    background-size: 100% 100%;
    margin-bottom: 50px;
}
.course .course_content .right .item{
    background: url('../img/right_bg.png?t=20210930');
    background-size: 100% 100%;
    margin-bottom: 50px;
}
.course .course_content  .item {
    width: 75%;
    color: #fff;
    margin: 0 auto 20px;
    background: red;
    padding: 20px 30px;
}
.course .course_content  .item:last-child{
    margin-bottom: 0;
}

.course .course_content .right{
    width: 48%;
    float: left;
    padding-top: 50px;
    border-left: 1px solid #cea45a;
}
.course  .more{
    width: 100px;
    text-align: center;
    background: #e27000;
    padding: 6px 12px;
    display: block;
    margin: 50px auto 20px;
    color: #fff;
    border-radius: 20px;
}
.course .btn_box{
    text-align: right;
    padding: 20px 0;
}
.course .btn_box a{
    background: #cea45a;
    padding: 5px 20px;
    color: #fff;
    border-radius: 20px;
    margin-right: 10px;
    display: inline-block;
    margin-bottom: 3px;
}

.course_content .item h6{
    font-size: 20px;
}

.course_content .item p{
    line-height: 25px;
}