.responsiveCal {
position: relative; padding-bottom: 75%; height: 0; overflow: hidden;
}
.responsiveCal iframe {
position: absolute; top:0; left: 0; width: 100%; height: 100%;
}
position: relative; padding-bottom: 75%; height: 0; overflow: hidden;
}
.responsiveCal iframe {
position: absolute; top:0; left: 0; width: 100%; height: 100%;
}