body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f6f8fb;
  color: #1f2937;
}

header {
  background: #0b3c5d;
  color: #fff;
  padding: 16px;
}

nav a {
  color: #fff;
  margin-right: 12px;
  text-decoration: none;
}

main {
  padding: 20px;
}

form {
  display: grid;
  gap: 8px;
  max-width: 360px;
  margin-bottom: 16px;
}

input,
select,
button {
  padding: 8px;
}