.main-content {
    transition: filter 0.3s ease;
  }
  .main-content.blur {
    filter: blur(5px);
  }
  
  #trigger {
    padding: 5px 10px;
    cursor: pointer;
    margin: 50px auto;
  }
  
  .popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
  }
  
  .popup {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    position: relative;
    width: 300px;
    text-align: center;
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    font-weight: bold;
    cursor: pointer;
    font-size: 18px;
    color: #000;
  }