body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f4f4;
}

/* header and footer */

header, footer {
  background: #007BFF;
  color: #fff;
  text-align: center;
  padding: 1rem;
}

main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem;
}