* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
}

.container {
  text-align: center;
  padding: 40px;
}

h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

p {
  font-size: 18px;
  margin-bottom: 30px;
}

.btn {
  background: #25D366;
  color: white;
  padding: 15px 30px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
}