body {
    width: 100% !important;
    /* max-width: 1920px !important; */
    min-width: 1200px !important;
}
.header_div{
    width: 100%;
    /* max-width: 1920px; */
    min-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}
.header_nav{
    display: flex;
    height: 95px;
    width: 100%;
    min-width: 1200px;
    /* max-width: 1920px; */
    /* float: left; */
    background: #fff;
}
.header_function_table {
    flex: 1;
    padding: 0 50px 0 0px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header_logo{
    width:360px;
    /* width: 21%; */
    height: 100%;
    text-align: center;
    display: flex;
    height:95px;
    align-items: center;
    justify-content: flex-end;
    /* float: left; */
}
.header_nav_body{
    /* float: left; */
    /* width: 63%; */
    /* height: 100%; */
    text-align:center;
    height: 95px;
    /* line-height: 95px; */
}
.header_ul{
    /* display:inline;
    white-space: nowrap; */
    /* width: 875px; */
    overflow: hidden;
}
.header_ul li{
    float: left;
    margin: 0 32px;
    text-align: center;
    font: 20px bolder;
    font-weight: 600;
    line-height: 95px;
    color: #333333;
}
.header_ul li a {
    padding: 12px 0;
    box-sizing: border-box;
    border-bottom: 2px solid #fff;
}
.header_ul li .a_hover {
    border-bottom: 2px solid #333;
}
.header_login{
    text-align: center;
    font: 18px bolder;
    color: #333333;
    font-weight: 500;
    height: 95px;
    line-height: 95px;

}
.header_login .login{
    margin-right: 10px;
    /* 
    margin-left: 90px; */
}
.header_login .register{
    margin-left: 10px;
}
.header_nav a{
    color: #333333;
}
.header_logo img{
    height: 70px;
    /* margin-left: 40px; */
}@media screen and (min-width: 1620px) and (max-width: 1710px) { /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .header_ul li {
        margin: 0 20px;
    }
}
@media screen and (min-width: 1451px) and (max-width: 1619px) { /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .header_ul li {
        margin: 0 15px;
    }
}
@media screen and (min-width: 1300px) and (max-width: 1450px) { /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .header_logo img {
        height: 65px;
    }
    .header_logo {
       width:297px;
    }
    .header_function_table {
        padding: 0 30px 0 0px;
    }
    .header_ul li {
        margin: 0 15px;
    }
}
@media screen and (max-width: 1300px) { /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .header_logo img {
        height: 65px;
    }
    .header_logo {
       width:297px;
    }
    .header_function_table {
        padding: 0 30px 0 0px;
    }
    .header_ul li {
        margin: 0 10px;
    }
}