/* 全局样式 */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

nav {
  background-color: #333;
  color: white;
  padding: 10px;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

nav ul li {
  margin: 0 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

section {
  padding: 50px;
  text-align: center;
}

#home h1 {
  font-size: 36px;
  margin-bottom: 20px;
}

#home p {
  font-size: 18px;
  margin-bottom: 30px;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 20px;
}