/* Typography and color palette */
body {
  font-family: 'Open Sans', sans-serif;
  background-color: #f4f4f4;
 background-image: url("http://bestanimations.com/Nature/nature-waterfall-animated-gif-2.gif");
 background-repeat: no-repeat;
 background-size: full-length;
 color: #333;
  margin: 0;
  padding: 0;
}

h1 {
  font-family: 'Source Serif Pro', serif;
  font-size: 2.5rem;
  color: #1c3d5a;
  text-align: center;
  margin-top: 1.5em;
}

.subtitle {
  text-align: center;
  font-style: italic;
  color: #666;
}

h2 {
  font-size: 1.5rem;
  margin: 1em 0;
}

p {
  line-height: 1.6;
  margin: 1em 0;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 2em;
  background-color: #ffffff;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

figure {
  margin: 2em 0;
  text-align: center;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

figcaption {
  font-size: 0.9em;
  color: #555;
  margin-top: 0.5em;
}

nav ul {
  list-style: none;
  padding: 0;
  text-align: center;
  margin: 2em 0;
}

nav li {
  display: inline;
  margin: 0 1em;
}

nav a {
  text-decoration: none;
  font-weight: bold;
  color: #005a9c;
}

nav a:hover {
  text-decoration: underline;
}

.back-link {
  text-align: center;
  margin: 2em 0;
}

footer {
  background-color: #1c3d5a;
  color: #fff;
  text-align: center;
  padding: 1em 0;
  font-size: 0.9em;
}