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CSS Box Shadow Generator

Design multi-layer realistic box shadows, smooth elevation levels, and inner debossed effects with clean CSS code.

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Shadow Layer Controls

Curated Shadow Presets

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Live Shadow Result

Shadow TargetLive CSS rendering
box-shadow: 0px 4px 6px -1px rgba(0, 0, 0, 0.1);
shadow-[0px_4px_6px_-1px_rgba(0,0,0,0.1)]
100% Client-Side Privacy: Your data is processed locally in your browser and is not uploaded to our servers.
🎨UI Elevation & Lighting Architecture

Mastering CSS Box Shadows: Layered Elevation & Modern Web Aesthetics

Learn how multi-layer ambient lighting, spread radiuses, and chromatic alpha shadows create tactile depth in modern web interfaces without performance bottlenecks.

☀️ Why Single-Layer Shadows Look Fake

In physical reality, light comes from both direct sources (sun, overhead lights) and diffuse ambient bounce (walls, table surfaces). Applying a single dark, blurry shadow in CSS (box-shadow: 0 10px 20px rgba(0,0,0,0.3)) creates a dirty, muddy halo around UI cards.

Professional UI designers construct multi-layered shadow stacks: a sharp, darker key-light shadow establishing immediate contact elevation, combined with an expansive, low-opacity ambient layer simulating environmental bounce.

⚡ Instant Vanilla & Tailwind CSS Export

Tweaking sub-pixel X/Y offsets, negative spread values, and RGBA alpha levels directly in browser dev tools is a tedious trial-and-error cycle.

Todoal’s CSS Box Shadow Generator provides real-time interactive sliders for multi-layer stacking, inset debossing, and generates instant production-ready standard CSS and Tailwind arbitrary value utility classes.

Complete Frontend UI Styling & Design Suite

Pair elevation shadows with Todoal's integrated CSS generators and code formatters for seamless component crafting:

🔲 Corner Curvature & Geometry

Craft smooth squircle curves and organic 8-point asymmetric radii with our CSS Border Radius Generator.

🌈 Chromatic Gradients & Backgrounds

Generate vibrant multi-stop linear and radial gradient backdrops with the Gradient Generator.

🎨 Color Picking & Palette Sampling

Sample exact HEX, RGB, and HSL tokens from screen assets using the Online Color Picker.

🧹 Stylesheet Formatting & Minification

Format and clean legacy stylesheets via CSS Formatter, or compress production bundles with the CSS Minifier. Test live CSS snippets safely in the CSS Previewer.

Anatomy of the CSS box-shadow Property

Value TokenFunctionRecommended Range
X-OffsetHorizontal displacement. Positive moves right; negative moves left.0px for centered lights; 2px to 8px for directional angles.
Y-OffsetVertical displacement simulating light source elevation.2px (subtle) to 24px (floating modal windows).
Blur RadiusGaussian edge feathering. Larger values create softer light diffusion.4px to 48px depending on card z-index height.
Spread RadiusExpands or shrinks the shadow footprint before blurring.-2px to -6px negative spread prevents harsh dark outlines.
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Frequently Asked Questions

Everything you need to know about this browser tool and privacy.

How do multi-layer CSS box shadows work?
Stacking multiple shadow declarations with subtle offsets and soft blurs simulates realistic ambient light bounce, creating far more natural physical depth than a single harsh shadow.
What does the spread radius do in a box shadow?
Positive spread values expand the shadow outwards uniformly in all directions, while negative spread values shrink the shadow inwards behind the element.
What is an inset shadow?
An inset shadow is drawn on the inner perimeter of the element's border box, creating a sunken, debossed, or cutout visual appearance.
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