/* Reset some default browser styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f9f9f9;
  color: #333;
  padding: 20px;
}

header {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 2px solid #ccc;
  margin-bottom: 30px;
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 5px;
}

header p {
  font-size: 1.2em;
  color: #555;
}

nav ul {
  list-style: none;
  margin-top: 15px;
}

nav ul li {
  display: inline-block;
  margin: 0 10px;
}

nav ul li a {
  text-decoration: none;
  color: #007acc;
  font-weight: bold;
}

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

main {
  max-width: 800px;
  margin: 0 auto;
}

section {
  margin-bottom: 40px;
}

section h2 {
  font-size: 1.8em;
  margin-bottom: 15px;
  color: #004d66;
  border-bottom: 1px solid #ccc;
  padding-bottom: 5px;
}

section h3 {
  font-size: 1.5em;
  margin-top: 20px;
  color: #005580;
}

section ul {
  list-style-type: disc;
  padding-left: 20px;
}

section ul li {
  margin-bottom: 15px;
}

footer {
  text-align: center;
  padding-top: 20px;
  border-top: 2px solid #ccc;
  margin-top: 40px;
  font-size: 0.9em;
  color: #777;
}