* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: Arial; background: #f9fafb; }
.btn { padding: 12px 24px; background: #1e40af; color: white; border: none; border-radius: 6px; cursor: pointer; }
.btn-pro { padding: 12px; background: #f59e0b; color: white; border: none; border-radius: 6px; width: 100%; cursor: pointer; }