.gifs {
    display:flex;    
    justify-content: center;  
    flex-wrap: wrap;       
      
}
.gifs img {
    max-width: 300px;      
    height: auto;             
    border-radius: 1px;   
    box-shadow: none;  
}

.gif-background{
  background-image: url('gifs/redCity.gif'); /* Change this to your actual GIF file name! */
  background-size: cover;       /* Stretches the GIF so there are no empty white borders */
  background-position: center;  /* Keeps the center of the GIF anchored in the middle of the screen */
  background-repeat: no-repeat; /* Prevents the GIF from repeating like a tiled floor */
  background-attachment: fixed; /* Locks the GIF in place so it doesn't move when you scroll down */
}