body {
  background-color: #f0f8ff;
  color: #333333;
  font-family: Arial, Helvetica, sans-serif;
  margin: 10px;
}

h1 {
  text-align: center;
}

nav {
  text-align: center;
}

nav a {
  margin: 0 10px;
  color: #0066cc;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
  color: #003366;
}

figure {
  margin: 20px auto;
  text-align: center;
}

figcaption {
  font-size: 16px;
  margin-top: 8px;
  color: #333;
  font-weight: 500;
}

footer {
  background-color: #e6f2ff;
  padding: 15px;
  margin-top: 30px;
  text-align: center;
  font-size: 14px;
  border-top: 2px solid #99ccff;
}

footer p {
  margin: 8px 0;
  color: #333;
}

footer a {
  color: #0066cc;
  text-decoration: none;
  font-weight: bold;
}

footer a:hover {
  text-decoration: underline;
  color: #003366;
}

#validation {
  margin-top: 10px;
}

@media only screen and (max-width: 550px) {
  img {
    display: none;
  }
}