CSS Design Generator
Visual shadows and glassmorphism builder for modern UIs.
10px
10px
25px
0px
0.2
#000000
Preview Box
Generated CSS
box-shadow: 10px 10px 25px 0px rgba(0, 0, 0, 0.2);
Designing a modern UI with layered shadows or frosted glass effects? Adjust the visual sliders and see the CSS update in real time — then copy the production-ready code directly into your stylesheet.
Last Updated: April 12, 2025Privacy: 100% Local Browser Processing
What is the Css Generator?
The CSS Design Generator is a visual tool for building complex Box Shadow effects and Glassmorphism (frosted glass) designs. Instead of guessing CSS property values and refreshing your browser repeatedly, use interactive sliders to control blur, spread, offset, opacity, and backdrop-filter settings while seeing the result update in real time. The tool generates clean, production-ready CSS code that you can copy directly into your project.
Real-World Use Cases
- UI design — create custom shadow effects for cards, buttons, modals, and navigation bars in your web application.
- Glassmorphism UI — design modern, translucent panel overlays for dashboards, login forms, and notification panels.
- Design system creation — build a consistent set of elevation tokens (shadow-sm, shadow-md, shadow-lg) for your design system.
- Client presentations — quickly prototype visual effects to show clients before implementing them in the actual codebase.
How to Use
- 1Switch between Shadow and Glassmorphism modes.
- 2Adjust the sliders to achieve the desired visual effect.
- 3Preview the result on a live element.
- 4Copy the generated CSS code to your stylesheet.
Technical Deep Dive
CSS box-shadow is a surprisingly versatile property that accepts multiple comma-separated shadow definitions, enabling layered shadow effects that create realistic depth perception. Each shadow definition includes horizontal offset, vertical offset, blur radius, spread radius, and color. This tool lets you add multiple shadow layers and adjust each independently to create subtle, premium-looking elevation effects used in modern design systems like Material Design and Apple's HIG. Glassmorphism combines several CSS properties to create a frosted glass appearance: backdrop-filter: blur() for the glass blur effect, a semi-transparent background color (rgba or hsla), a subtle border, and often a background gradient. The backdrop-filter property applies filter effects to the area behind the element, creating the characteristic 'looking through frosted glass' effect. This tool generates the complete CSS for both effects, including vendor-prefixed versions (-webkit-backdrop-filter) for maximum browser compatibility.
Pro Tips & Best Practices
- For realistic shadows, use multiple layers: a large, subtle shadow for ambient occlusion plus a small, darker shadow for direct light. Single-shadow elements look flat.
- Glassmorphism works best on colorful or image backgrounds — on a plain white background, the blur effect is invisible. Always test your glass effect against the actual background it will appear on.
- Use rgba() colors for shadows rather than named colors — the alpha channel (opacity) is crucial for natural-looking shadows.
- Backdrop-filter is supported in all modern browsers including Chrome, Firefox, Safari, and Edge. IE11 does not support it.