CSS Debug is a free Chrome extension developed by Teodor Voinea. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This extension aims to assist developers in debugging CSS by highlighting the borders of HTML elements.

With CSS Debug, developers can easily identify and visualize the outlines of HTML elements, making it much simpler to identify any potential issues or inconsistencies in the CSS styling. By highlighting the borders, this extension provides a clear visual representation of the structure and positioning of HTML elements on a webpage.

CSS Debug is a valuable tool for developers who want to streamline their CSS debugging process and ensure the accuracy of their web designs. Its straightforward functionality and open-source nature make it a reliable choice for those in need of a tool to assist with CSS debugging.