body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

header {
  background-color: #141b7b;
  color: #000000;
  padding: 20px;
  text-align: center;
}

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

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

nav a {
  color: #000000;
  text-decoration: none;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
}

section {
  margin-bottom: 40px;
}