Web DevelopmentGenerated accuracy model review: 2026-05-06

Box Shadow Gen accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

The tool generates a CSS string: `box-shadow: [X]px [Y]px [Blur]px [Spread]px rgba(0,0,0, [Opacity]);`

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

X Offset: 10 px
Y Offset: 10 px
Blur Radius: 20 px
Spread: 0 px
Opacity: 0.2

Expected outputs

CSS Code: box-shadow: 10px 10px 20px 0px rgba(0,0,0,0.2);

Known limitations

This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

The generator outputs a single outer `box-shadow` declaration rather than layered or inset shadows.
Shadow color is currently modeled as black with adjustable opacity for a practical default.
Values are expressed in pixels, which matches most quick CSS prototyping workflows.

Unit handling

X Offset accepts values in px.
Y Offset accepts values in px.
Blur Radius accepts values in px.
Spread accepts values in px.
Opacity accepts numeric values.

Rounding rules

Number displays use up to 2 decimal places in the calculator UI.
Input precision follows configured step values where provided.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current css-box-shadow-generator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Box Shadow Gen.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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