@media screen and (max-width: 319px) {

}
@media (min-width: 320px) and (max-width: 480px) {
    .back-to-top{
        bottom: 90px !Important;
    }
    .back-to-top.active{
        color: #da2128;
        background-color: #ffffffb8 !important;
    }
    .absolute-footer.dark{
        margin-bottom: 60px;
    }
    section.tongquan table tr td:first-child{
        width: 45% !Important;
    }
    section.tongquan h2{
        font-size: 25px;
    }
    .message-box .basic-title span{
        font-size: 100% !Important;
    }
}
@media (min-width: 481px) and (max-width: 768px) {

}
@media (min-width: 768px) and (max-width: 849px) {

}
@media (min-width: 850px) and (max-width: 1020px) {

}