@media screen and (min-width: 900px){
    #lianxi .web_f{
        position: fixed;
        width: 50px;
        right: 0%;
        bottom: 0%;
        margin-right: 30px;
        margin-bottom: 30px;
    }
    
    #lianxi .chat_close{
        display: none;
    }

    #lianxi .phone_show_lianxi{
        display: none;
    }

}

#lianxi .all_lianxi .lianxi_facebook {
    background: url("../img/facebook.png") no-repeat left 50%;
}

#lianxi .all_lianxi .lianxi_whatsapp {
    background: url("../img/whatsapp.png") no-repeat left 50%;
}

#lianxi .all_lianxi .lianxi_linying {
    background: url("../img/lingyin.png") no-repeat left 50%;
}

#lianxi .all_lianxi .lianxi_item{
    height: 50px;
    background-size: 50px auto;
    margin-bottom: 10px;
}

#lianxi .phone_show_lianxi{
    background: url("../img/liaoliao.png") no-repeat left 50%;
    height: 50px;
    background-size: 50px auto;
    margin-bottom: 10px;
}

#lianxi .go_top {
    height: 50px;
    background: #07bb8a url(../img/icon_chat_menu.png) no-repeat 0 0;
    border-radius: 100%;
    background-position: 0 -50px;
    background-color: #b0b0b0;
    background-size: auto;
}


@media screen and (max-width: 900px){
    #lianxi .shour_right_bom{
        position: fixed;
        width: 50px;
        right: 0%;
        bottom: 0%;
        margin-right: 30px;
        margin-bottom: 30px;
    }
    #lianxi .all_lianxi{
        width: 85%;
        margin: 0 auto;
        margin-top: 50%;
        position: fixed;
        top: 0;
        left: 7%;
        display: none;
    }

    #lianxi .phone_show_lianxi{
        display: block;
    }
    
    #lianxi .full_liaxi{
        background-color: white;
        border-radius: 5px;
        box-shadow: 0px 0px 5px rgb(167, 166, 166);
    }
    
    #lianxi .full_liaxi::after{
        content: "";
        clear: both;
        display: block;
    }
    
    #lianxi .all_lianxi .lianxi_item{
        float: left;
        width: 50px;
        margin: 10px;
    }
    
    #lianxi .chat_close {
        width: 100%;
        display: block;
        text-align: center;
        margin-top: 20px;
    }
    
    #lianxi .chat_close img{
        height: 35px;
    }
}