#popup {
    max-width: 350px;
    position: absolute;
    z-index: 999999;
    top: 170px;
    left: 2%;
    right: 2%;
}


#close_popup { 
    display: block;
    position: absolute;
    right: -15px;
    top: -15px;
    width: 40px;
    height: 40px;
    background: url('btn_close.png');
    }



@media screen and (max-width: 650px){
#popup{max-width:200px;}

}