.white-magnificpopup {
    position: relative;
    background: #FFF;
    padding: 40px;
    width: auto;
    max-width: 800px;
    margin: 20px auto;
    text-align: center;
}

/* overlay at start */
.mfp-fade.mfp-bg {
    opacity: 0;
    -webkit-transition: all 0.15s ease-out;
    -moz-transition: all 0.15s ease-out;
    transition: all 0.15s ease-out;
}
    /* overlay animate in */
    .mfp-fade.mfp-bg.mfp-ready {
        opacity: 0.8;
    }
    /* overlay animate out */
    .mfp-fade.mfp-bg.mfp-removing {
        opacity: 0;
    }

/* content at start */
.mfp-fade.mfp-wrap .mfp-content {
    opacity: 0;
    -webkit-transition: all 0.15s ease-out;
    -moz-transition: all 0.15s ease-out;
    transition: all 0.15s ease-out;
}
/* content animate it */
.mfp-fade.mfp-wrap.mfp-ready .mfp-content {
    opacity: 1;
}
/* content animate out */
.mfp-fade.mfp-wrap.mfp-removing .mfp-content {
    opacity: 0;
}