#overlay-popup {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.9);
    z-index: 1000;
    align-items: center;
    justify-content: center;
  }

  #overlay-popup-close-button {
    color: lightgray;
    font-size: 80px;
    font-weight: 500;
    cursor: pointer;
    position: absolute;
    bottom: 50px;
    z-index: 2000;
    text-shadow: black 1px 0 10px;
  }

  #overlay-popup-image {
    max-width: 90%; 
    max-height: 90vh
  }

  @media only screen and (max-width: 768px) {
    #overlay-popup-image {
        max-width: 100%; 
        max-height: 100%;
      }
  }