.bg-img {
  background-image: url("../pics/back400/megane400.webp");
  
  background-image: -webkit-linear-gradient(bottom, rgba(255,255,255,0), rgba(255,255,255,1)), url("../pics/back400/megane400.webp");
  background-image: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1)), url("../pics/back400/megane400.webp");
}	 
		
@media (prefers-color-scheme: dark) {		
.bg-img {
  background-image: url("../pics/back400/megane400.webp");
  
  background-image: -webkit-linear-gradient(bottom, rgba(51,51,51,0), rgba(51,51,51,1)), url("../pics/back400/megane400.webp");
  background-image: linear-gradient(to bottom, rgba(51,51,51,0), rgba(51,51,51,1)), url("../pics/back400/megane400.webp");
}	 

}