.contenedor{
background-image: url(
 ../img/fondo.jpg
);
 background-color: blue;
 width: 100%;
 height: 100vh;
}
.carousel {
    width: 100%;
    max-width: 1000px;
    margin: auto;
}

.carousel-item img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}