body {
  font-family: 'Hiragino Kaku Gothic ProN', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background-color: #333;
  color: #fff;
  padding: 1em 2em;
}

header h1 {
  margin: 0;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1em;
}

nav a {
  color: #fff;
  text-decoration: none;
}

main {
  padding: 2em;
}

section {
  margin-bottom: 2em;
}

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