.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.subtitle {
  color: #555;
  margin-bottom: 20px;
}

.card {
  background: #f4f4f4;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}

button {
  padding: 8px 14px;
  border: none;
  border-radius: 6px;
  background: #2d89ef;
  color: #fff;
  cursor: pointer;
}