body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
}
.box {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}
.seccion1 {
  background-color: rgb(0, 0, 0);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 20px;
}
.seccion2 {
  background-color: rgb(224, 0, 0);
  font-family: 'Courier New', Courier, monospace;
  font-size: 40px;
}
.seccion3 {
  background-color: rgb(226, 185, 0);
  font-family: 'Times New Roman', Times, serif;
  font-size: 60px;
}