.calendar-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 75%; /* 비율 조절: 4:3 */
    height: 0;
    overflow: hidden;
    max-width: 800px;
    margin: auto;
  }

  .calendar-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
  }

  .calendar-link {
    display: block;
    text-align: center;
    margin: 20px auto;
    font-size: 18px;
    color: #007bff;
    text-decoration: underline;
  }