.flex {
  display: flex;
}

.calendar {
  flex: 1;
  border: 1px solid #edf2f7;
}

@media (max-width: 480px) {
  .flex {
    flex-direction: column;
  }

  .calendar {
    margin-bottom: 8px;
  }
}

.calendar label[for] {
  display: block;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.calendar input,
.calendar select {
  position: relative;
  min-width: 120px;
  height: 40px;
  margin-bottom: 8px;
  padding: 16px;
  border: 1px solid #edf2f7;
  font-size: 16px;
  background-color: transparent;
}

.calendar input:focus,
.calendar select:focus {
  outline: none;
}

.calendar input:disabled {
  opacity: 0.6;
}

.calendar .btn {
  position: relative;
  min-width: 120px;
  margin: 16px 0;
  font-weight: 600;
  cursor: pointer;
  outline: 0;
  display: inline-block;
  height: 40px;
  padding: 0 24px;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: 2px;
  color: #2196f3;
  border: 2px solid #2196f3;
  background: transparent;
}

.calendar .btn:hover {
  background-color: #2196f3;
  color: #fff;
}