body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background-image: url("sfondo-sito.jpg.210x158.webp");
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  margin: 0;
}

#contenuto {
  margin-left: 25%;
  margin-right: 25%;
}

table {
  border-collapse: separate;
}

table img {
  width: 250px;
  max-width: 250px;
  height: auto;
  display: block;
}
.evidenziato {
  background-color: #fff4b0;
}