.bg-img-fade {
    background-image: linear-gradient(
        rgba(0, 0, 0, 0.8), 
        rgba(0, 0, 0, 0.6)
      ),
      url('Assets/bgmain.png'); /* RUTA DE TU IMAGEN */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: white; 
}