@media screen and (max-width:900px) {
    .popup_def.float,
    .popup_p1.float,
    .popup_p2.float,
    .popup_p3.float,
    .popup_p4.float,
    .popup_p5.float,
    .popup_p6.float,
    .popup_p7.float {top:0!important; left:0!important; width:100%!important;}
}