body {
  background-color: #00008b; /* azul oscuro */
  color: yellow;
  font-family: 'Roboto', sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
}

h1 {
  margin-top: 40px;
  font-size: 3em;
}

.photo-container {
  margin: 30px auto;
  max-width: 90%;
}

.photo-container img {
  width: 300px;
  height: auto;
  border-radius: 8px;
}

#countdown {
  font-size: 2em;
  margin-top: 20px;
  color: white;
}

/* Responsive design */
@media (max-width: 600px) {
  h1 {
    font-size: 2em;
    margin-top: 20px;
  }

  .photo-container img {
    width: 90%;
    max-width: 250px;
  }

  #countdown {
    font-size: 1.5em;
  }
}