CSS Box Shadow Generator – Visual Shadow Builder

The CSS box-shadow property adds one or more shadow effects to an element. Each shadow is defined by horizontal offset, vertical offset, blur radius, spread radius, color, and an optional inset keyword. Multiple shadows are separated by commas.

The blur radius controls how soft the shadow edges are. A value of 0 creates a hard-edged shadow with no blur. Higher values make the shadow larger and more diffuse. The blur radius cannot be negative.

The spread radius expands or contracts the shadow. A positive value makes the shadow larger in all directions. A negative value shrinks it. A spread of 0 means the shadow is the same size as the element.

An inset shadow appears inside the element's border, creating a pressed-in or embossed effect. Without inset, the shadow appears outside the element (a drop shadow). Both can be combined in the same element.

Yes. CSS box-shadow accepts multiple comma-separated shadows. This tool lets you add up to 5 shadows simultaneously. Stacking shadows is used for layered effects like Material Design's elevation system.

box-shadow is a CSS property that applies to the rectangular bounding box of an element. filter: drop-shadow() follows the actual shape of the element, including transparent areas. Use drop-shadow for PNG images with transparent backgrounds.

No. box-shadow does not affect the document flow or the element's size. Adjacent elements are unaware of the shadow. If you need shadows to take up space, use outline or padding instead.

Material Design uses multiple layered shadows with different opacities and blur values to simulate elevation. For example, elevation 4 uses: box-shadow: 0 2px 4px rgba(0,0,0,0.2), 0 4px 8px rgba(0,0,0,0.1). Use the "Add shadow" button to layer them.