body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  background-color: #f4f4f4;
}
header, section {
  background: white;
  margin-bottom: 20px;
  padding: 20px;
  border-radius: 10px;
}
h1, h2 {
  color: #2c3e50;
}