.pc_header_box .logo_box{
        align-items: center;
        justify-content: space-between;
        padding:20px 0px;
    }
    .pc_header_box .logo_box .logo img{
        height: 52px;
    }
    .pc_header_box .logo_box .phone{
        display: flex;
        align-items: center;
    }
    .pc_header_box .logo_box .phone img{
        margin-right: 10px;
    }
    .pc_header_box .logo_box .phone .text_div{
        color:#37393d;
        font-size: 15px;
    }
    .pc_header_box .logo_box .phone .text_div span{
        font-size: 20px;
        font-weight: bold;
    }
    .pc_header_box .nav li{
        flex:1;
        position: relative;
    } 
    .pc_header_box .nav li .child{
        position: absolute;
        z-index: 99;
        display: none;
        left: 0px;
        left: 50%;
        transform: translateX(-50%); 
        min-width: 100%;
    } 
    .pc_header_box .nav li:hover .child{
        display: block;
    }
    .pc_header_box .nav li .child li a{
        padding: 0px;
        text-align: center;
        line-height: 35px;
        color:#fff;
    }
    .pc_header_box .nav li .item{
        display: block;
        text-align: center;
        color:#fff;
        line-height: 50px;
        font-size: 16px;
    }
    .pc_header_box .nav li:hover{
        background: #f68c34;
    }
    .pc_header_box .nav .active{
        background: #f68c34;
    }