Give your coding assistant a design brief, not just a screenshot A developer building the Stylegrab CSS inspection extension outlined a workflow for feeding coding assistants a structured design brief—explicit colors, typography, spacing and corner radii—rather than a screenshot alone. The guide warns that copying values by selector specificity can be wrong because cascade layers and importance take precedence, and recommends verifying final computed values in DevTools. It also notes that static HTML/CSS exports miss application state, JavaScript interactions and responsive rules, and that asymmetric corners can't be captured by a single uniform rounded class. A screenshot can show a coding assistant the shape of a design. A short brief with actual colors, typography and spacing gives it values it can work with. You can collect those values with browser DevTools; a CSS inspection extension can reduce some of the clicking. Disclosure: I'm working on Stylegrab, the extension used in the accompanying demo. The workflow below also works manually. Editorial disclosure: this article was prepared with AI assistance. The examples and product demo use our own sample page; the extension does not call an AI model. Start with a page you own or have permission to reuse. Pick one component and a small set of visual rules: a page background, text and accent colors, body and heading type, common spacing and corner radii. Keep your own product's content and identity. The declaration with the highest selector specificity doesn't always win. Cascade layers, importance and other parts of the cascade come first. In DevTools, use the Computed panel to check the final value before copying it. For a tool, this is a useful regression test: @layer base, overrides; @layer base { example { color: red; } } @layer overrides { .example { color: blue; } } For