#galleryContainer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
    visibility: hidden;
    opacity: 0;
    transition:opacity 1s;
    cursor:zoom-out;
   
  }
  
  #galleryContainer img {
    border:2px solid white;
    max-height: 80%;
    width: auto;
    
  }
  
  #galleryContainer.visible {
    opacity: 1;
    visibility: visible;
  }