CSS Box Shadow Generator

About CSS Box Shadow Generator

The box-shadow CSS property adds shadow effects to HTML elements. This visual editor lets you create complex, multi-layered shadow effects without writing CSS by hand.

Box Shadow Syntax

box-shadow: [inset] offset-x offset-y blur-radius spread-radius color;

• offset-x: Horizontal shadow offset (positive = right, negative = left)
• offset-y: Vertical shadow offset (positive = down, negative = up)
• blur-radius: How blurry the shadow is (0 = sharp, higher = softer)
• spread-radius: Shadow size increase (positive = larger, negative = smaller)
• inset: Makes the shadow appear inside the element
• color: Shadow color (use rgba for transparency)

Shadow Design Tips

• Use multiple layers: Stacking 2-3 subtle shadows looks more natural than one heavy shadow
• Match the light source: Keep offset-y positive (light from above) for natural-looking shadows
• Use transparency: Semi-transparent black/gray (rgba) blends with any background
• Avoid pure black: Use dark gray or colored shadows for a softer look
• Smaller blur for close objects: Objects closer to the surface cast sharper shadows

FAQ

How many shadow layers can I add?

CSS supports unlimited comma-separated shadow values. In practice, 2-4 layers create the most realistic effects. This tool supports up to 5 layers.

What's the difference between box-shadow and drop-shadow?

box-shadow applies to the element's box (rectangle or border-radius shape). filter: drop-shadow() follows the element's actual shape, including transparent areas — useful for irregularly shaped images or SVGs.

Does box-shadow affect layout?

No. Box shadows are purely visual and don't take up space in the layout. They can extend beyond the element's boundaries without affecting surrounding elements.