.lightbox {
    display: none;
    position: fixed;
    z-index: 999;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.8);
  }

  .lightbox img {
    margin: auto;
    display: block;
    max-width: 80%;
    max-height: 80%;
    border-radius: 10px;
    box-shadow: 0 0 15px #000;
  }

  .lightbox:target {
    display: block;
  }