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

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

.container {
  text-align: center;
}

button {
  margin-top: 20px;
  padding: 12px 25px;
  border: none;
  border-radius: 6px;
  background: #00ffc3;
  color: #000;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  opacity: 0.8;
}