csstopsites.com valid

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Claim my listing on Agent Web Map for csstopsites.com:
1. POST https://agentwebmap.com/v1/sites/csstopsites.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://csstopsites.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/csstopsites.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/csstopsites.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

Corrections or removal requests: contact the directory. Ownership management is optional.

CSS Top Sites

Free tutorials, references and tools for CSS backgrounds, with a focus on black and dark backgrounds: background-color, background-image, background-size, background-position, background-repeat, gradients, patterns, dark mode and accessible contrast. Every page has live demos and copy-paste CSS.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-21T10:23:20.322Z. Cached copy · Source on csstopsites.com

# CSS Top Sites

> Free tutorials, references and tools for CSS backgrounds, with a focus on black and dark backgrounds: background-color, background-image, background-size, background-position, background-repeat, gradients, patterns, dark mode and accessible contrast. Every page has live demos and copy-paste CSS.

All content is written for front-end developers and designers. Contrast ratios quoted on the site are calculated with the WCAG 2 relative-luminance formula.

## Black and dark backgrounds

- [How to make a black background in CSS](https://csstopsites.com/pages/black-background-css): Copy-paste code for a #000 page background, where the CSS goes, inline styles and the JavaScript way
- [Shades of black in CSS](https://csstopsites.com/shades-of-black-css): Black hex codes (pure, off-black, slate, charcoal) with swatches and contrast ratios
- [Colours that go with a black background](https://csstopsites.com/black-background-combinations): Text and accent colours on black with computed WCAG contrast
- [Black background examples](https://csstopsites.com/black-background-examples): Gallery of black background designs with CSS
- [Black grid backgrounds](https://csstopsites.com/black-grid-background-css): Graph paper, dot grids, checkerboards and evenly spaced squares with gradients
- [Dark backgrounds](https://csstopsites.com/pages/dark-backgrounds): Dark theme background design patterns
- [Dark mode backgrounds](https://csstopsites.com/dark-mode-backgrounds): Switching backgrounds with prefers-color-scheme and custom properties
- [Accessible dark backgrounds](https://csstopsites.com/accessible-dark-backgrounds): WCAG contrast on dark surfaces, halation, testing
- [Dark glassmorphism](https://csstopsites.com/glassmorphism-dark-backgrounds): backdrop-filter glass effects on dark backgrounds with contrast notes
- [Red and black background](https://csstopsites.com/red-and-black-background): Red and black palettes, gradients and contrast
- [Blue and black background](https://csstopsites.com/blue-and-black-background): Blue and black palettes, gradients and contrast
- [Green and black background](https://csstopsites.com/green-and-black-background): Green and black palettes, gradients and contrast
- [Purple and black background](https://csstopsites.com/purple-and-black-background): Purple and black palettes, gradients and contrast
- [Black and gold background](https://csstopsites.com/pages/combinations/black-and-gold-background): Gold hex codes, metallic gradients and maroon/black/gold variants
- [Black background with smoke effect](https://csstopsites.com/pages/combinations/black-background-smoke): Animated CSS smoke on black

## Background properties

- [All CSS background properties](https://csstopsites.com/css-background-properties): Overview of every background longhand and the shorthand
- [CSS background cheat sheet](https://csstopsites.com/css-background-cheat-sheet): Quick reference with initial values and syntax
- [background-color](https:/
…

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Machine-readable: GET /v1/resolve?q=csstopsites.com · GET /v1/domain/csstopsites.com · this page as Accept: application/json or text/markdown · MCP lookup_domain