body {
  margin: 0;
  min-height: 100vh;
  background-image: url('../immagini/sfondo3.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  padding: 2rem;
  text-align: center;
}

h1 {
  /*font-size: 2rem;*/
  font-size: 2.2rem;
  font-weight: bold;
}