.mg_popup .pp_close {
    width: 40px;
    height: 40px;
    background-image: url(../img/close.png);
    background-repeat: no-repeat;
    background-position: center 15px;
    display: block;
    float: right;
    padding: 15px 15px 5px 15px;
    cursor: pointer;
}

.mg_popup .pp_close:hover {
    background-position: center bottom 5px;
}

.mg_popup form {
    width: 800px;
    padding: 15px;
    background-color: #FCFCFC;
}

.mg_popup form h2 {
    font-size: 18px;
    line-height: 20px;
    margin: 10px 0 15px 0;
    font-family: 'myriad_pro', sans-serif;
}

@media all and (max-width: 799px) {
    .mg_popup { width: 100%; }

    .mg_popup form {
        width: 100%;
        padding: 10px;

        -moz-box-sizing: border-box;
        -webkit-box-sizing: border-box;
        -o-box-sizing: border-box;
        box-sizing: border-box;
    }
}

@media all and (max-width: 479px) {
    .mg_popup form {
        padding: 10px 0;
    }

    .mg_popup form h2 {
        margin: 5px 0;
    }

    .mg_popup .pp_close {
        padding: 5px;
    }
}

@media only screen and (-webkit-min-device-pixel-ratio:  1.5),
    only screen and (-o-min-device-pixel-ratio:  3/2),
    only screen and (min--moz-device-pixel-ratio:  1.5),
    only screen and (min-device-pixel-ratio:  1.5) {

    .mg_popup .pp_close {
        background-image: url(../img/close@2x.png);
        background-size: 40px 120px;
    }
}