@media screen and (max-width: 750px) {
    .header-box,.footer,.home_page,.pc_channel, .pc_details{
        display: none;
    }
    .phone-box,.m-footer,.m-channel,.m-home,.m-details{
        display: block;
    }

    .floatright,.floatright1{
        display: none;
    }
}
@media screen and (min-width: 750px) {
    .header-box,.footer,.home_page,.pc_channel,.pc_details{
        display: block;
    }
    .phone-box,.m-footer,.m-channel,.m-home,.m-details{
        display: none;
    }
    .floatright,.floatright1{
        display: block;
    }
}