body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  color: #333;
}

header {
  background-color: #004080;
  color: white;
  padding: 20px;
  text-align: center;
}

main {
  padding: 20px;
}

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