@charset "utf-8";
.iframe-rwd {
    position: relative;
    padding-bottom: 145%;
    padding-top: 30px;
    height: 0;
    -webkit-overflow-scrolling: touch;
    overflow-y: scroll;
}
.iframe-rwd iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

@media only screen and (max-width: 991px) {
/* 如果使用者視窗寬度 <= 991px*/
    .iframe-rwd {
    position: relative;
    padding-bottom: 200%;
    padding-top: 30px;
    height: 0;
    -webkit-overflow-scrolling: touch;
    overflow-y: scroll;
    }
}


@media only screen and (max-width: 767px) {
/* 如果使用者視窗寬度 <= 767px*/
    .iframe-rwd {
    position: relative;
    padding-bottom: 50%;
    padding-top: 30px;
    height: 0;
    -webkit-overflow-scrolling: touch;
    overflow-y: scroll;
    }
}