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

header {
  background-color: #1976d2;
  color: white;
  padding: 10px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 15px;
}

nav a {
  color: white;
  text-decoration: none;
}

main {
  padding: 20px;
}

input {
  display: block;
  margin: 5px 0;
}