/***********页头**********/
header{
    width: 100%;
    background: #ffffff;
}
header .header-1_width{
    width: 100%;
    background: #f9f9f9;
}
header .header-1_width .header-1{
    width: 1200px;
    font-size: 14px;
    padding: 5px 0;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    position: relative;
}
/*登录入口*/
header .header-1_width .header-1 .dlrk{
    display: none;
    position: absolute;
    top: 24px;
    right: 45px;
    background: #f8f8f8;
}
header .header-1_width .header-1 .dlrk li{
    font-size: 16px;
    padding: 10px;
}
/*登录入口*/
/*客服入口*/
header .header-1_width .header-1 .kfrk{
    display: none;
    position: absolute;
    top: 24px;
    right: -17px;
    background: #f8f8f8;
}
header .header-1_width .header-1 .kfrk li{
    font-size: 16px;
    padding: 10px 15px;
}
/*客服入口*/
header .logo{
    width: 1200px;
    margin: 10px auto;
    display: flex;
    justify-content: space-between;
}
header .logo a img:nth-of-type(2){
    width: 260px;
    height: 57px;
    margin-left: 30px;
    transform: skewY(-2deg);
}
header .logo span{
    font-size: 18px;
    line-height: 60px;
}
/*菜单栏*/
header nav{
    width: 1200px;
    margin: 0 auto;
    display: flex;
}
/*课程分类*/
header nav .kcfl{
    width: 170px;
    position: relative;
    margin-right: 20px;
}
header nav .kcfl .kcfl-a{
    display: block;
    width: 170px;
    height: 50px;
    color: #ffffff;
    text-align: center;
    line-height: 50px;
    background: #45ddba;
}
header nav .kcfl ul{
    display: none;
    background: rgba(0,0,0,0.3);
    position: absolute;
    z-index: 99;
}
header nav .kcfl ul li a{
    display: block;
    width: 170px;
    height: 40px;
    color: #ffffff;
    text-align: center;
    line-height: 40px;
    border-bottom: 1px dashed rgba(0,0,0,0.3);
}
header nav .kcfl ul li:last-child a{
    border: none;
}
/*课程分类 end*/
header nav .nav{
    display: flex;
    /*margin-left: 20px;*/
}
header nav .nav li{
    padding: 0 10px;
}
header nav .nav li a{
    display: block;
    height: 50px;
    padding: 0 5px;
    line-height: 50px;
    box-sizing: border-box;
}
header nav .nav li a:hover{
    color: #45ddba;
    border-bottom: 2px solid #45ddba;
}
/*菜单栏 end*/
/***********页头 end**********/