.no-sidebar .content #main {
    margin: 10px auto 80px;
}

#main .img_s {
    max-width: 400px;
    margin: auto;
}

#main .img_m {
    max-width: 650px;
    margin: auto;
}

#main .img_l {
    max-width: 850px;
    margin: auto;
}