body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: radial-gradient(circle at top, #0f2027, #203a43, #2c5364);
  min-height: 100vh;
  color: #ffffff;
}

h1 {
  text-align: center;
  margin-top: 30px;
  color: #ffffff;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}