@-moz-document url-prefix(http://ckdvd.com/Player.asp) {
#main_box {
position: absolute;
left: calc(50% - 315px);
top: calc(50% - 290px);
width: auto!important;
}
}
#main_box {
position: absolute;
left: calc(50% - 315px);
top: calc(50% - 290px);
width: auto!important;
}
}