CSS Layout Generator

The CSS Layout Generator helps you quickly create modern, responsive page layouts using semantic HTML and up-to-date CSS techniques. Instead of relying on outdated <div> - only structures, this tool generates clean layouts built with elements such as headers, main content areas, sidebars, and footers, making your code easier to read, maintain, and extend.

With the generator you can adjust layout options, and customize colors for individual sections like the main content area, left and right sidebars, and footer. As you make changes, the live preview updates instantly, allowing you to see exactly how your layout will look before exporting the code.

Once you’re happy with the result, copy the HTML and CSS, or download a complete page to use directly in your project.

About CSS Layout Generator

This generator creates page layouts by combining semantic HTML elements with modern CSS layout techniques. Based on your selections, the tool builds a structured layout using elements such as <header>, <main>, <aside>, and <footer>, ensuring the output follows current best practices for accessibility and maintainability.

When you adjust layout options, such as enabling sidebars or choosing section colours, the preview updates in real time. Each region gets its own class, such as .layout-header, so the CSS styles only your layout and never every <header> or <footer> on the page, including ones inside articles.

Once your layout is ready, copy the HTML and CSS separately, or copy or download a complete page. The exported code is intentionally minimal and framework-free, allowing you to drop it directly into any project or extend it further with your own styles and components.

Technical Philosophy

Unlike older layout generators that rely on "floats" or "position: absolute," this architect generates a Holy Grail layout using grid-template-areas. This method provides the most readable and maintainable code possible, allowing developers to change the entire page structure for mobile users by simply reordering a few text strings in the CSS.

Key Features Under the Hood

• Dynamic Fractional Sizing: The main content column uses minmax(0, 1fr), so it fills all the space the fixed-width sidebars leave, and long words or wide images inside it can never push the layout wider than the screen.
• A real breakpoint: The preview can be narrowed to tablet or phone width, and the layout switches to one column through the same @media rule you copy, so what you see is what your visitors get. You choose the breakpoint and whether the main content or the sidebars come first on small screens.
• Sticky header and sidebars: Optional position: sticky keeps the header, and the sidebars on wide screens, in view while the content scrolls.
• Readable text: The text colour of each region is picked automatically to contrast with the background you choose.
• Clean-Code Export: The exported files are purged of any unused CSS classes. If a component (like the Left Sidebar) is disabled, no related CSS is generated, keeping your project's footprint small.

Why CSS Grid?

CSS Grid is the most powerful layout system available in modern browsers. It allows for two-dimensional control (rows and columns simultaneously), which was previously impossible with Flexbox alone. This tool ensures that your generated code follows best practices, including a short box-sizing reset so padding never breaks your layout dimensions (leave it out if your site already has one).