body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #000000, #ff3131);
  color: white;
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
}

h1 {
  font-size: 3em;
  margin-bottom: 0.5em;
}

p {
  font-size: 1.2em;
  margin-bottom: 1.5em;
}

.btn {
  background: white;
  color: black;
  padding: 0.8em 1.5em;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}