.header_box {
    width: 100%;
    background: #FFFFFF;
    box-shadow: 0px 0px 5px 0px rgba(0, 0, 0, 0.15);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.header_content {
    width: 1200px;
    height: 70px;
    margin: 0 auto;
}

.tohomeA {
    float: left;
}

.homelogo {
    margin-top: 13px;
}
.shux {
    display: inline-block;
    width: 1px;
    height: 38px;
    background: #DFDFDFa8 !important;
    margin: 0 12px 0 6px;
}

.header_menu {
    float: right;
}

.header_menuA {
    float: left;
    margin-top: 25px;
    margin-left: 60px;
    position: relative;
    cursor: pointer;
}

.header_menula {
    margin-left: 4px;
}

.header_menuW {
    display: block;
    font-size: 16px;
    font-weight: bold;
}

.header_menuL {
    display: block;
    width: 24px;
    height: 3px;
    background-color: #FF4826;
    margin: 6px auto 0 auto;
}

.redMenu {
    color: #ff4725;
}

.blackMenu {
    color: #333333;
}

.huiMenu {
    color: #333333;
}

.huiMenu:hover {
    transition: all .2s linear;
    -webkit-transition: all .2s linear;
    -ms-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    font-weight: bold;
}

.blackMenu:hover {
    transition: all .2s linear;
    -webkit-transition: all .2s linear;
    -ms-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    color: #ff4725;
}

.header_join {
    float: right;
    overflow: hidden;
    margin-left: 64px;
}

.header_joinA {
    width: 70px;
    height: 32px;
    border-radius: 16px;
    font-size: 16px;
    font-weight: 400;
    float: left;
    line-height: 32px;
    text-align: center;
    margin-top: 19px;
    margin-left: 15px;
}

.header_joinA:hover {
    transition: all .2s linear;
    -webkit-transition: all .2s linear;
    -ms-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    font-weight: bold;
}

.registerA {
    color: #FF4725;
}

.loginA {
    background-color: #ff4725;
    color: #FFFFFF;
    border: 1px solid #FF4725;
}

.header_user {
    float: right;
    overflow: hidden;
    margin-left: 64px;
    margin-top: 15px;
}

.header_userI {
    float: left;
    width: 40px;
    height: 40px;
    border-radius: 40px;
}

.header_userA {
    float: left;
    font-size: 16px;
    color: #333333;
    line-height: 40px;
    margin-left: 8px;
}

.header_userA:hover {
    transition: all .2s linear;
    -webkit-transition: all .2s linear;
    -ms-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    color: #ff4725;
}

/*课件下载*/
.header_downLink {
    position: absolute;
    top: 30px;
    left: -10px;
    width:86px;
     display: none;
    box-sizing: border-box;
    padding: 4px 0;
    z-index: 100;
    border: 1px solid #e6e6e6;
    background-color: #ffffff;
    border-radius: 5px;
}

.header_downLinkA {
    display: block;
    text-align: center;
    font-size: 15px;
    height: 36px;
    line-height: 36px;
    font-weight: normal;
    box-sizing: border-box;
    border-top: 1px solid #e6e6e6;
    transition: all .2s linear;
    -webkit-transition: all .2s linear;
    -ms-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
}

.header_downLinkA:first-child {
    border-top:none;
}

.ndlink:hover {
    color: #ff7f00;
}

.ydlink {
    color: #ff4725;
}

.ndlink {
    color: #333333;
}


/*首页头部*/
.Hheader_box {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 100;
}

.whiteMenu {
    color: #ffffff;
}

.hheader_menuL {
    display: block;
    width: 24px;
    height: 3px;
    background-color: #ffffff;
    margin: 6px auto 0 auto;
}

.hheader_menuA {
    float: left;
    margin-top: 25px;
    margin-left: 60px;
    position: relative;
}

.hloginA {
    background-color: #ffffff;
    color: #333333;
    border: 1px solid #ffffff;
}

.no {
    display: none;
}

/*头部下拉*/
.header_menuP {
    display: -webkit-flex;
    display: flex;
    flex-direction: row;
    align-items: center;
}

.header_select{
    width: 121px;
    position: absolute;
    top: 20px;
    left: -20px;
    box-sizing: border-box;
    padding-top: 13px;
    display: none;
}

.header_selectkuang {
    border: 1px solid #dedede;
    background-color: #ffffff;
    box-sizing: border-box;
    padding:0 0 20px 24px;
    border-radius: 4px;
}

.header_selectA {
    display: block;
    font-size: 14px;
    margin-top: 16px;
}



@media (max-width: 1440px){
    .header_select {
        width: 91px;
        padding: 0 0 15px 10px;
        left: -10px;
    }

    .header_selectA {
        font-size: 11px;
        margin-top: 10px;
    }
    
    .header_content {
        width: 1000px;
        height: 53px;
    }
    
    /* .homelogo {
        content: url("/static/pc/img/current/swklogo.png");
        margin-top: 7px;
    } */

    .header_menuW {
        font-size: 15px;
    }

    .header_menuL {
        width: 21px;
        height: 2px;
    }

    .header_menuA {
        margin-top: 15px;
        margin-left: 43px;
    }


    .header_joinA {
        width: 60px;
        height: 26px;
        border-radius: 13px;
        font-size: 15px;
        line-height: 26px;
        margin-top: 13px;
    }

    .header_userI {
        width: 34px;
        height: 34px;
        border-radius: 34px;
    }

    .hheader_userA {
        font-size: 15px;
        line-height: 36px;
    }

    .header_user {
        margin-top: 8px;
    }

    .header_userA {
        font-size: 15px;
        line-height: 34px;
    }
    .header_selectkuang {
        padding:0 0 20px 10px;
    }

}

@media (max-width: 820px){
    .header_content {
       width: auto;
    }
    .header_user {
        margin-left: 0;
    }
    .header_menuA {
        margin-left: 30px;
    }
}