body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f8f8f8;
}

header {
  background-color: #333;
  color: #fff;
  padding: 10px 0;
  text-align: center;
}

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

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

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

section {
  padding: 40px;
}

footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 10px 0;
  position: fixed;
  bottom: 0;
  width: 100%;
}