/* Base styling */
body {
  font-family: 'Arial', sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  line-height: 1.6;
  background-color: #f5f5f5;
  color: #333;
}

/* Header styling */
header {
  text-align: center;
  margin-bottom: 2em;
}

header h1 {
  margin: 0;
  font-size: 2em;
  color: #2c3e50;
}

header p {
  font-size: 1.2em;
  color: #7f8c8d;
}

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

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

nav a {
  text-decoration: none;
  color: #3498db;
  font-size: 1.1em;
}

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

/* Main content styling */
main {
  background: #fff;
  padding: 20px;
  border-radius: 4px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Additional responsiveness (optional) */
@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  header h1 {
    font-size: 1.5em;
  }

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