div[id^="mce_inlinepopups_"][role^="dialog"] {
    min-width:800px !important;
    /*	left: 15% !important;
        height: 70% !important;
        top: 15% !important;
        */
}

iframe[id^="mce_inlinepopups_"] {
    min-width:795px !important;
    /*
    width: 99% !important;
    height: 98% !important;
    */
}