CSS Layout Generator

I'll create a website where users can generate responsive CSS layouts using flexbox and grid. Users will be able to customize their layouts and get the generated HTML and CSS code.

Features

This CSS Layout Generator allows users to:

1. Choose between Flexbox and Grid layouts - Toggle between the two most powerful CSS layout systems
2. Customize layout properties - Adjust settings like flex direction, justify content, grid columns, and more
3. Preview in real-time - See how your layout changes as you adjust settings
4. Test responsiveness - Preview your layout on different device sizes (mobile, tablet, desktop)
5. Generate code - Get the HTML and CSS code that you can copy and paste into your projects
6. Responsive by default - All generated layouts include media queries for responsive behavior

How It Works

1. Select either Flexbox or Grid from the tabs at the top
2. Adjust the layout settings in the right panel
3. See your changes reflected in real-time in the preview area
4. Switch between device sizes to test responsiveness
5. Copy the generated HTML and CSS code

The application is built with Next.js and uses Tailwind CSS for styling. It includes a dark mode toggle and is fully responsive itself, so you can use it on any device.

I'll fix the preview not showing anything in the layout generator. The issue is likely with how the preview container is being styled or rendered.

The preview should now be visible. I've made the following changes to fix the issue:

1. Added a minimum height to the preview container to ensure it's visible even when empty
2. Added minimum width and height to the individual items so they're always visible
3. Ensured the background colors are properly set using CSS variables
4. Made the preview container have a relative position to ensure proper rendering

These changes should make the preview section display properly. The items should now be visible with their proper layout based on your flexbox or grid settings.

If you're still having issues with the preview, please let me know and I can further troubleshoot the problem.