#reserve-num {
  width: 10vw;
}
#timezone, #datetime {
  width: 20vw;
}
@media (min-width: 768px){
  
}

@media (max-width: 991px){
  
}

@media (max-width: 767px){
  #reserve-num {
    width: 40vw;
  }
  #timezone, #datetime {
    width: 50vw;
  }
  .btn-reserve {
    display: none;
  }
}

@media (max-width: 575px){
  
}