.calendly-overlay
.calendly-popup {
  max-height: 100% !important;
  max-width: 100% !important;
}

.calendly-overlay .calendly-popup-close,
.calendly-overlay .calendly-close-overlay {
  display: block !important;
 }

 .calendly-overlay {
  background-color: rgba(31,31,31,.9) !important;
 }