body {
  
  font-family: Arial, sans-serif;
  max-width: 700px;
  margin: auto;
  padding: 2rem;
  line-height: 1.6;
  color: #141414;
  background: #fcfeff;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  font-family: 'Courier New', Courier, monospace;
  /* margin: 0.2em 0; */
}

h3 {
  font-family: 'Courier New', Courier, monospace;
}

h5 {
  font-family: 'Courier New', Courier, monospace;
}

nav a {
  margin: 0 0.5em;
  text-decoration: none;
  color: #004488;
}

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

section {
  margin-bottom: 2rem;
}

h2 {
  color: #222;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.3em;
}

footer {
  text-align: center;
  font-size: 0.9em;
  color: #777;
}