.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 9999;
    display: none;
  }
  
  .popup-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    padding: 20px;
  }
  
  .close-popup {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
  }