CSS Layout Generator
Build a responsive page shell visually, preview it at multiple screen sizes, and export clean semantic HTML and CSS.
Design your layout
Start with a preset or customize every section. The preview and code update instantly.
Quick presets
Choose a proven structure, then fine-tune it below.
Grid is ideal for page structure; Flexbox is useful for simpler shells.
StructureChoose sections and dimensions
Spacing & sizingControl the outer shell and gaps
AppearanceSet section colors and surface details
Responsive & outputMobile behavior and code preferences
Live preview
Switch devices to test the responsive behavior before exporting.
Use the generated code
Copy one part, download separate files, or export a complete standalone HTML page.
About the CSS Layout Generator
This visual builder creates a complete, responsive page shell using semantic elements such as <header>, <nav>, <main>, <aside>, and <footer>. Unlike a static template, every control updates the preview and exported code immediately.
What makes this layout generator useful?
- Choose between CSS Grid and Flexbox without rewriting the structure.
- Enable or remove headers, navigation, sidebars, and footers independently.
- Control widths, heights, gaps, padding, colors, borders, radius, and shadows.
- Define a custom mobile breakpoint, stacking order, and sidebar visibility.
- Export minimal HTML/CSS, a complete standalone page, or a project ZIP.
- Save designs locally or copy a shareable URL containing the configuration.
Grid or Flexbox?
CSS Grid is usually the strongest choice for two-dimensional page layouts because it controls rows and columns together. Flexbox is excellent when the structure is primarily one-dimensional. This tool keeps the HTML identical so you can compare both approaches safely.
Clean, conflict-resistant output
The generated selectors are scoped to your chosen class prefix instead of styling bare elements globally. That helps prevent a layout’s header or footer rules from accidentally affecting unrelated components elsewhere on a site.
Privacy
Your layout settings and generated code stay in your browser. Nothing is uploaded to Toolslight. Saved designs use local browser storage, and project files are created directly on your device.