@import url('/components/header/header.css');
@import url('/components/footer/footer.css');
body{
    background: #f3f3f3;
}
.w1200{
    width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.banner{
    width: 1920px;
    height: 454px;
    position: relative;
    margin-left: auto;
    margin-right: auto;
}
.banner img {
    height: 100%;
    position: relative;
    left: 50%;
    transform: translate(-50%);
}
.banner h1{
    min-width: 630px;
    position: absolute;
    font-size: 105px;
    font-weight: bold;
    color: #fff;
    text-align: center;
    top: 140px;
    left: 50%;
    transform: translate(-50%);
}
.breadcrumb{
    font-size: 14px;
    padding-bottom: 15px;
    color: #333333;
}

.breadcrumb a{
    font-size: 14px;
    color: #215591;
}

.box1 {
    height: 180px;
    box-sizing: border-box;
    margin-top: 50px;
    margin-bottom: 40px;
    font-size: 18px;
    color: #181f5c;
    width: 1200px;
    position: relative;
    margin-left: auto;
    margin-right: auto;    
    text-align: justify;
}


.box1 .box1_con {
    width: 100%;
    height: 100%;
    padding: 50px 58px 0;
    box-sizing: border-box;
    text-indent: 2em;
    border: 5px solid #5953b2;
    position: relative;
    background-color: #f3f3f3;
    z-index: 2;
}
.box1 .mask_border_box{
    position: absolute;
    width: 1270px;
    height: 180px;
    box-sizing: border-box;
    left: -35px;
    bottom: -10px;
    border: 3px solid #54518b;
    z-index: 1;
}
.box1 .mask2_border_box{
    width: 830px;
    height: 10px;
    position: absolute;
    z-index: 3;
    background-color: #f3f3f3;
    margin: auto;
    top: -5px;
    left: 0;
    right: 0;
}


.box1 span {
    font-weight: 700;
    line-height: 34px;
}

.course_list{
    width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.course_item{
    margin-bottom: 26px;
    padding: 20px 22px;
    box-sizing: border-box;
    background-color: #fff;
    display: flex;    
}
.course_item:nth-child(6n+1){
    color: #c62127;
}
.course_item:nth-child(6n+2){
    color: #3f91ee;
}
.course_item:nth-child(6n+3){
    color: #f87859;
}
.course_item:nth-child(6n+4){
    color: #ff662d;
}
.course_item:nth-child(6n+5){
    color: #5c28bb;
}
.course_item:nth-child(6n+6){
    color: #197838;
}

.course_item_cover{
    margin-right: 30px;
    width: 374px;
    height: 257px;
    position: relative;
    overflow: hidden;
}
.course_item_cover img{
    min-height: 100%;
    max-height: 100%;
    position: relative;
    margin-left: 50%;
    transform: translate(-50%);
}
.course_item_cover a{
    display: block;
    width: 100%;
    height:100%;
    transition: all linear 0.1s;
}

.course_item_cover a:hover{
    transform: scale(1.1);
}
.course_name{
    font-size: 24px;
    line-height: 28px;
    margin-bottom: 15px;
    font-weight: 700;
    padding-top: 15px;
    color: currentColor;
}
.course_desc{
    font-size: 14px;
    line-height: 22px;
    color: #666;
    display: flex;
    margin-bottom: 5px;
}
.course_desc b{
    color: #333;    
}
.course_desc span{
    flex: 1;
    text-align: justify;
}


.course_detail{
    flex: 1;
    position: relative;
}
.course_btns{
    position: absolute;
    right: 0;
    bottom: 0px;
    width: 450px;
    height: 36px;
    text-align: center;
    line-height: 36px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    color: currentColor;
}
.course_btns a{
    width: 30%;
    height: 36px;
    background-color: #fff;
    font-size: 16px;
    border: 1px solid currentColor;
    width: 126px;
    cursor: pointer;
    color: currentColor;
    font-weight: 700;
}
.course_btns a .iconfont{
    font-size: 18px;
    margin-left: 5px;
    font-weight: 400;
}
.course_btns a:hover{
    background-color: #00aeef;
    color: #fff;
    border: 1px solid #00aeef;    
}

.course_icon{
    position: absolute;
    right: 0px;
    top: -5px;
}
.course_icon img{
    width: 55px;
}