I'll create a responsive grid layout using CSS Grid and Flexbox for a portfolio website. This layout will be responsive and adapt to different screen sizes. I'll create a main grid container with a header, main content area (which will contain project cards), and a footer.

This layout creates a responsive portfolio website with the following features:

1. Overall page structure using CSS Grid:

   • The min-h-screen grid grid-rows-[auto_1fr_auto] class on the main container creates a full-height layout with three rows: header, main content, and footer.

2. Header:

   • Fixed at the top of the page.
   • Contains a logo/title and navigation menu.
   • Uses Flexbox (flex justify-between items-center) for layout.

3. Main Content:

   • Contains a grid of project cards.
   • Uses CSS Grid for responsive layout: grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-6.
   • This creates a 1-column layout on mobile, 2-column on tablets, and 3-column on larger screens.

4. Project Cards:

   • Each card is a flex container (flex flex-col) to ensure consistent height.
   • Contains an image, project title, description, and a link.
   • The image uses Next.js Image component for optimization.

5. Footer:

   • Fixed at the bottom of the page.

6. Responsiveness:

   • The layout is responsive thanks to Tailwind's utility classes.
   • The grid adjusts columns based on screen size.
   • Padding and margins are consistent across different screen sizes.

This layout provides a solid foundation for a portfolio website. You can easily customize it further by adding more sections, changing colors, or adjusting the grid layout to fit your specific needs.