.container {
  display: flex;
  flex-direction: column;
  width: 800px;
  max-width: 100vw;
}

.calendars {
  display: flex;
}

.calendars > div:first-child {
  padding-right: 20px;
  border-right: 1px solid var(--gray300);
}

.calendars > div:last-child {
  padding-left: 20px;
}

@media only screen and (max-width: 768px) {
  .calendars {
    flex-direction: column;
  }
}