body {
  font-family: 'Microsoft Yahei', sans-serif;
  margin: 0;
  padding: 0;
  background: #fdfdfd;
  color: #333;
}
header {
  background: #222;
  color: #fff;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header .logo {
  font-size: 20px;
  font-weight: bold;
}
header nav a {
  color: #fff;
  margin-left: 15px;
  text-decoration: none;
}
.hero {
  text-align: center;
  padding: 20px;
  background: #eee;
}
.hero-image {
  max-width: 100%;
  height: auto;
  margin-bottom: 20px;
}
.about {
  padding: 20px;
  max-width: 800px;
  margin: auto;
  text-align: center;
}
footer {
  text-align: center;
  padding: 10px;
  background: #222;
  color: #fff;
  font-size: 14px;
}