#page_presentation {
  min-height: 80vh;
}

@media only screen and (max-width: 1000px) and (max-device-width: 1000px) and (orientation: landscape) {
  #page_presentation {
    min-height: 62vh;
  }
}
@media screen and (max-device-width: 796px) and (orientation: portrait) {
  #page_presentation {
    min-height: 92vh;
  }
}