@media (max-width:575px) {
  .display-4 {
      font-size: 1.5rem;
  }
  .day h5 {
      background-color: #f8f9fa;
      padding: 3px 5px 5px;
      margin: -8px -8px 8px -8px;
  }
  .date {
      padding-left: 4px;
  }
}

@media (min-width: 576px) {
  .day {
      height: 73px;
  }
}