.grtyoutube-popup {position: fixed;top: 0;left: 0;right: 0;bottom: 0;z-index: 99999}
.grtyoutube-popup-content {margin-top: 40px;width: 95%;max-width: 850px;margin-left: auto;margin-right: auto;position: relative}
.grtyoutube-popup-close {position: absolute;top: -30px;right: 0;color: #fff;font-size: 25px;width: 17px;background: #fff;height: 17px;cursor: pointer}
.grtyoutube-iframe {width: 100%;height: 480px}
@media (max-width:767px) {
    .grtyoutube-iframe {
        width: 100%;
        height: 350px
    }
}
.grtyoutube-dark-theme {background: rgba(0, 0, 0, .85)}
.grtyoutube-dark-theme .grtyoutube-popup-close {background: url(../images/close.png) no-repeat;height: 20px;width: 20px;background-size: contain}
.grtyoutube-light-theme {background: rgba(255, 255, 255, .85)}
.grtyoutube-light-theme .grtyoutube-popup-content {-webkit-box-shadow: 0 0 8px 0 rgba(0, 0, 0, .4);-moz-box-shadow: 0 0 8px 0 rgba(0, 0, 0, .4);box-shadow: 0 0 8px 0 rgba(0, 0, 0, .4)}
.grtyoutube-light-theme .grtyoutube-popup-close { background: url(icon-close-black.png) no-repeat}