body {
  font-family: "微軟正黑體", sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: #fff;
  padding: 20px;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: right;
}

nav li {
  display: inline-block;
  margin-left: 20px;
}

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

#company-info {
  background-color: #f2f2f2;
  padding: 50px 0;
}

#company-info h1 {
  text-align: center;
}

#products {
  padding: 50px 0;
}

#products h2 {
  text-align: center;
}

#products ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#products li {
  display: inline-block;
  margin: 0 20px;
  text-align: center;
}

#products img {
  max-width: 100%;
}

#products p {
  margin-top: 10px;
  font-weight: bold;
}

#about {
  background-color: #f2f2f2;
  padding: 50px 0;
}

#about h2 {
  text-align: center;
}

#contact {
  padding: 50px 0;
}

#contact h2 {
  text-align: center;
}

form {
  max-width: 600px;
  margin: 0 auto;
}

label, input, textarea {
  display: block;
  margin-bottom: 10px;
}

input, textarea {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 5px;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

button[type="submit"] {
  display: block;
  margin: 0 auto;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  background-color: #333;
  color: #fff;
  cursor: pointer;
}