body {
  background-image: url("/campo.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;

  color: #2d4f3a;
  font-family: "Trebuchet MS", sans-serif;

  max-width: 900px;
  margin: auto;
  padding: 20px;
}

h1 {
  text-align: center;
  color: #ff7eb6;
  font-size: 3em;
  text-shadow: 2px 2px 4px white;
}

h2 {
  color: #ffd54f;
}

.caja {
  background: rgba(255,255,255,0.75);
  border: 3px solid #a5d6a7;
  border-radius: 20px;
  padding: 20px;
  margin: 20px 0;
  box-shadow: 0 0 15px rgba(0,0,0,0.15);
}

a {
  color: #4fc3f7;
  font-weight: bold;
}

a:hover {
  color: #ff7eb6;
}

img {
  border-radius: 15px;
  max-width: 100%;
}
}