#div-collage{
    position: fixed;
    top: 100px;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    background-color: rgb(59, 59, 59);
}
.imgcollage {
    position: absolute;
    width: 150px; 
    -webkit-box-shadow: -4px 4px 10px 3px rgba(0,0,0,0.56); 
    box-shadow: -4px 4px 10px 3px rgba(0,0,0,0.56);
}
.imgcollage.GW, .imgcollage.SNES, .imgcollage.N64{
    width: 200px; 
}
  @media screen and (max-width: 991px) {
    #div-collage{
        top: 40px;
    }
    .imgcollage {
        width: 100px; 
    }
    .imgcollage.GW, .imgcollage.SNES, .imgcollage.N64{
    width: 150px; 
}
  }