TinkerCSS is a developer tools chrome extension. it's a free extension and is featured in Developer Tools, it has 141 active users since released its first version, it earns an average rating of 3.00 from 2 rated user, last update is 3455 days ago.
TinkerCSS appends a CSS style tag to the end of a HTML document <head>, that you can then live modify via the extension's editor Inspector panel, and see the results in real-time. The CSS you write is saved with reference to the page URL, so if you open the same page again and load the panel, your previously written snippet will load up.
You could download the latest version crx file or older version files and install it.
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You could find more help information from tinkercss support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of tinkercss.
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