.ec-calendar {
  max-width: 400px;
  border: 1px solid #ccc;
  font-family: sans-serif;
  margin: 0 auto;
}
.ec-calendar-header {
  background: #f5f5f5;
  padding: 10px;
  text-align: center;
  font-weight: bold;
}
.ec-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}
.ec-day-name,
.ec-day {
  padding: 10px;
  text-align: center;
  border: 1px solid #e0e0e0;
}
.ec-day.empty {
  background: #f9f9f9;
}
.ec-day.highlight {
  background: #07764A;
  font-weight: bold;
  color: #fff;
}