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name: frontend-ui-builder description: Build responsive frontend pages and reusable UI components with clean layouts and modern styling.

Frontend UI Builder

Instructions

1. Page & Layout Structure

• Use semantic HTML (header, main, section, footer)
• Full-width or container-based layouts
• Clear visual hierarchy
• Grid or Flexbox-based positioning

2. Components

• Build reusable UI components (buttons, cards, navbars)
• Consistent spacing and typography
• Component-first mindset
• Easy to scale and modify

3. Styling

• Mobile-first CSS approach
• Use Flexbox and CSS Grid
• CSS variables for colors, spacing, and fonts
• Clean hover, focus, and active states

4. Responsiveness

• Works across mobile, tablet, and desktop
• Breakpoints for layout changes
• Fluid typography and spacing

Best Practices

• Keep components reusable and isolated
• Follow mobile-first design principles
• Maintain a consistent spacing system
• Ensure accessible color contrast
• Avoid inline styles
• Use clear and predictable class names

Example Structure

Copy<header class="navbar">
  <div class="container">
    <h1 class="logo">Brand</h1>
    <nav class="nav-links">
      <a href="#">Home</a>
      <a href="#">Features</a>
      <a href="#">Contact</a>
    </nav>
  </div>
</header>

<main class="container">
  <section class="card-grid">
    <div class="card">
      <h2>Card Title</h2>
      <p>Reusable component content.</p>
      <button class="btn-primary">Action</button>
    </div>
  </section>
</main>