/************prereg_iframe*************/
.play_body_bg{
    background: #f5f5f5;
    overflow-y: hidden;
}
.prereg_iframe{
	width: 100%;
    height: calc(100vh - 50px);
    height: calc( (var(--vh, 1vh) * 100) - 50px );
    padding-bottom: 0;
    background: #FF8bc5;
    margin: 0 auto;
}
.app_BNblock .prereg_iframe{
    height: calc(100vh - 130px);
    height: calc( (var(--vh, 1vh) * 100) - 130px );
}