body {
  background-color: #001380;
}

h1 {
  color: white;
}

.titleDiv {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  height: 15vh;
}

.subtitleDiv {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  color: lightgrey;
}

.catalizzatore {
  display: flex;
justify-content: center;
  align-items: center;
  margin-left: auto;
  margin-right: auto;
  height: 70vh;
  text-align: center;
}

.footer {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  color: green;
  height: 8vh;
}