CSS Studio is a browser-based CSS design tool that lets designers edit styles, layout, and content visually while an AI agent writes every change directly into source code.

The gap between visual design and production code has long been one of the most frustrating parts of frontend work. Designers mock up interfaces in Figma, then hand them to developers who rebuild everything from scratch. CSS Studio, from the team behind Motion, takes a different approach: it puts the design tool directly inside the browser, on the live page, and connects it to an AI coding agent that handles the implementation.

The workflow is built around three steps. First, designers use CSS Studio's on-page editing panel to change colors, layout, typography, transforms, and animations using visual controls. The tool works with any site in Chrome, Safari, or Firefox. Second, those visual changes sync to a local AI agent that finds the right files and applies the edits, whether the project uses React, Vue, plain HTML, or Tailwind CSS. Third, the agent writes the code, the designer reviews the diff, commits, and deploys. No copy-pasting, no context switching between tools.

CSS Design Tool Features Built for Real Front-End Work

The feature set goes well beyond basic color pickers. CSS Studio includes a full animations timeline where designers can scrub through CSS keyframe animations, add and move keyframes, and adjust duration, delay, direction, and easing curves. Spring easings get their own dedicated editor, using Motion's spring system to generate real CSS springs with precise bounce and duration controls. A gradient editor handles linear, radial, and conic gradients with movable color stops. A CSS variables panel detects all variables available on any element and lets designers propagate changes site-wide with a single edit. DOM editing tools allow adding, reordering, duplicating, and deleting elements, with inline text editing on double-click.

CSS Studio is in early access and available as a one-time purchase for $99 with all future updates included. For frontend teams who want to close the loop between visual design decisions and shipped code, it is a direct and practical solution. More at cssstudio.ai.