/*header*/

.page_container{
    font-size: 17px;
}
.header{
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10;
    width:100%;
    height:80px;
    line-height:80px;
    margin:auto;
    background:#fff;
    box-shadow: 0 0 10px #bab2f1;
}
.h_mian{
    width:1200px;
    margin:auto;
}
.h_nav{
    float:left;
}
.h_nav li{
    position: relative;
    float:left;
    text-align:center;
    color:#fff;
    cursor:pointer;
    margin-right: 35px;
}
.h_nav a{
    color:#333;
    display:inline-block;
}
.h_login{
    float:right;
}
.bm_entrance{
    display:inline-block;
    min-width:80px;
    height:35px;
    color: #fff;
    line-height:35px;
    text-align:center;
    border-radius:30px;
    margin-left: 5px;
    padding: 0 15px;
    font-size: 16px;
    background-image: linear-gradient(to right,#dc8e39,#7e88d4);
}
.sd_entrance{
    display:inline-block;
    min-width:80px;
    height:35px;
    color: #fff;
    line-height:35px;
    text-align:center;
    border-radius:30px;
    margin-left: 5px;
    padding: 0 15px;
    font-size: 16px;
    background-image: linear-gradient(to right,#ee9699,#f8931e);
}
.bm_loginout{
    display:inline-block;
    min-width:80px;
    height:35px;
    color: #fff;
    line-height:35px;
    text-align:center;
    border-radius:30px;
    margin-left: 5px;
    padding: 0 15px;
    font-size: 16px;
    background-image: linear-gradient(to right,#dc8e39,#7e88d4);
}
.sd_loginout{
    display:inline-block;
    min-width:80px;
    height:35px;
    color: #fff;
    line-height:35px;
    text-align:center;
    border-radius:30px;
    margin-left: 5px;
    padding: 0 15px;
    font-size: 16px;
    background-image: linear-gradient(to right,#ee9699,#f8931e);
}
.nav_menu{
    display: none;
    position: absolute;
    top: 60px;
    left: calc((100% - 80px) / 2);
    width: 80px;
    line-height: 40px;
    padding: 10px 0;
    text-align: center;
    border-radius: 10px;
    background-color: #fff;
    box-shadow:-5px 5px 10px -4px #ddd,5px 5px 10px -4px #ddd;
}
.nav_menu a{
    display: inline-block;
    width: 100%;
    color: #333;
}
.nav_menu:before{
    content: ' ';
    display: inline-block;
    position: absolute;
    top: -17px;
    left: 30px;
    width: 0;
    height: 0;
    border: 10px transparent solid;
    border-bottom: 10px #fff solid;
}