body {
  background-color: #e0e0e0;
  margin-top: 50px;
}
.container {
  max-width: 700px;
  margin: auto;
}
.card-content {
  padding-bottom: 10px;
}
.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  background-color: white;
  color: black;
  margin-bottom: 20px;
}
.day-name {
  font-weight: bold;
  padding: 8px;
  background-color: #eceff1;
}
.day {
  padding: 12px;
  border: 1px solid #ccc;
  min-height: 50px;
  font-size: 14px;
}
.sunday { color: red; }
.saturday { color: blue; }
.holiday { color: red; }
.today { background-color: #ccc; }

/* Sub */
.sub-calendars {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sub-cal-card {
  flex: 1 1 300px;
  min-width: 300px;
}

.sub-cal-card .card-title {
  display: block;
  color: white;
  background-color: #546e7a;
  padding: 8px;
  text-align: center;
}