Quick CSS Inspector is a Chrome Extension designed to facilitate the inspection of calculated CSS styles by simply clicking on the desired target. By activating the inspector mode through the extension icon, users can seamlessly click on any element within the current page. Subsequently, a light mask covers the page, revealing the box model of the selected item along with a draggable window displaying the calculated CSS values.

To close the displayed information, users can click anywhere outside the window on the mask. Additionally, refreshing the page or toggling off the inspector mode via the extension icon restores the page to its original state. This tool offers a user-friendly and efficient way to inspect CSS styles in real-time.