body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.5;
  background-color: #f5f5f5;
  color: #222;
}

header, footer {
  background-color: #222;
  color: #fff;
  padding: 15px;
  text-align: center;
}

main {
  padding: 20px;
}

section {
  margin-bottom: 20px;
}

h2 {
  color: #444;
}