body {
  font-family: 'Garamond', serif;
  background: url('https://www.transparenttextures.com/patterns/old-mathematics.png') repeat;
  color: #2c1b0f;
  margin: 0;
  padding: 0;
}

header {
  background-color: #3b2d1f;
  color: #f4e9d6;
  padding: 1em;
  text-align: center;
  border-bottom: 2px solid #8b5e3c;
}

nav a {
  margin: 0 1em;
  color: #e0cfa9;
  text-decoration: none;
  font-weight: bold;
}

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

main {
  max-width: 800px;
  margin: 2em auto;
  text-align: center;
  padding: 1em;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid #cbb38b;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.portrait {
  max-width: 350px;
  border: 5px solid #7e6542;
  margin-bottom: 1em;
}

footer {
  text-align: center;
  padding: 1em;
  background-color: #3b2d1f;
  color: #e0cfa9;
  position: fixed;
  width: 100%;
  bottom: 0;
}