Powerful CSS generators for box shadows, flexbox layouts, grid layouts, and unit conversions. Get CSS and Tailwind code instantly. All processing happens locally in your browser.
box-shadow: 4px 4px 8px 0px #00000040;Tool Notes is a Supporter feature.
Choose between Box Shadow, Flexbox, or Unit Converter tabs.
Use sliders and inputs to configure the CSS properties. See live preview of the result.
Copy the generated CSS or Tailwind code to your clipboard.
Try preset configurations for common patterns, then customize from there.
The box shadow generator creates CSS box-shadow properties with customizable horizontal/vertical offset, blur radius, spread, and color. Multiple layers can be stacked for complex effects like elevated cards or neumorphic designs. Each layer supports RGBA colors with alpha transparency and inset shadows for inner effects. The tool generates both standard CSS and Tailwind arbitrary values.
Configure flex container properties (flex-direction, justify-content, align-items, flex-wrap, gap) and see the equivalent CSS and Tailwind classes in real-time. The visual builder shows how items will be arranged with your settings. Supports all modern flexbox properties including row/column direction, center/space-between alignment, and gap spacing introduced in CSS Grid.
Convert between absolute units (px, pt) and relative units (rem, em, vw, vh). Uses your specified base font size (default 16px) for accurate rem/em calculations. The conversion follows W3C standards: 1rem = base font size, 1em = parent font size, 1vw = 1% of viewport width. Useful for responsive design and accessibility-friendly sizing.
All CSS generation happens entirely in your browser using JavaScript. You get both vanilla CSS and Tailwind CSS output where applicable. The generated code is production-ready and can be copied directly into your stylesheets. No server communication occurs - the tool works completely offline once loaded.
This tool generates box shadows (single or multiple layers), flexbox layouts (container and item properties), and converts between CSS units (px, rem, em, %).