header {
  text-align: center;
  padding: 20px;
  background: white;
  border-bottom: 1px solid #ddd;
}

.form-container {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

main {
  padding: 20px;
  max-width: 800px;
  margin: auto;
}

.placeholder {
  text-align: center;
  color: #888;
}