.fb_top{
    /*width: 100%;*/
    width: 80%;
    height: 260px;
    background-color: #1c2836;
    padding: 0 10%;
    overflow: hidden;
}
.fb_top:after{
    display: block;
    content: "";
    clear: both;
}
.fb_QR{
    float: left;
    width: 20%;
    text-align: center;
    padding-top: 3%;
}
.contact{
    display: inline-block;
    width: 100%;
    color: #ffffff;
    font-size: 18px;
}
.contact_us{
    font-size: 10px;
    color: #caae8f;
}
.QRcode{
    display: inline-block;
    width: 128px;
    height: 128px;
    background-color: #ffffff;
    margin-top: 2%;
}
.scanner{
    display: inline-block;
    width: 100%;
    color: #ffffff;
    margin-top: 2%;
}
.fb_table{
    float: left;
    width: 60%;
    height: 190px;
    font-size: 14px;
    color: #999999;
    margin: 25px auto;
}
.provide{
    font-size: 24px;
    color: #cccccc;
}
.fb_but{
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #39424d;
    font-size: 12px;
    color: #999999;
}