body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f7fa;
  color: #333;
  margin: 0;
  padding: 0;
}

header {
  background: #1e293b;
  color: #fff;
  padding: 20px;
}

header h1 {
  margin: 0;
  font-size: 24px;
}

.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  padding: 25px;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  background: #e5e7eb;
  text-align: center;
  padding: 15px;
  font-size: 14px;
}