#my-lightbox-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 9999;
  }
  .lightbox-content {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
  }
  .lightbox-content img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    display: block;
  }
  .lightbox-close {
    background-color: rgba(0,0,0,0.5);
    width: 45px;
    height: 45px;
    border-radius: 300px;
    position: absolute;
    top: -10px; right: -10px;
    font-size: 30px;
    color: #fff;
    cursor: pointer;
    line-height: 1;
  }