@media screen and (min-width: 601px) {
  html {
    font-size: 12px;
  }

  section {
    margin-top: 20%;
  }
}

@media screen and (max-width: 600px) {
  html {
    font-size: 10px;
  }

  section {
    margin-top: 30%;
  }
}

body {
  background-color: RGB(29, 30, 30);
  color: black;
  background-image: url("../images/logo-best-pet.png"),
    url("../images/fondo-best-pet.jpeg");
  background-repeat: no-repeat, repeat;
  background-position: center 5%, center;
  background-size: 30%, contain;
  font-family: sans-serif;
}

a {
  color: black;
}

section {
  padding: 15px;
  display: flex;
  text-size-adjust: auto;
  justify-content: center;
  flex-direction: column;
  font-size: 1rem;
}

section > h1,
section > h3 {
  text-align: center;
}

footer {
  text-align: center;
  font-size: 1rem;
}