body {
    font-family: "Shuei KakuGo Kin M";
}
article {
    max-width: 1280px;
}
#talk_nav,
.talk_nav,
#information,
#index_nav {
    max-width: 740px;
    margin-left: auto;
    margin-right: auto;
}
#talk_wrap {
    max-width: 620px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    #bg {
        background-image: url(/ns_kawada_tajima/back_sp.jpg)!important;
        background-size: 100% auto!important;
    }
}