Update source file when CSS is changed through Chrome developer tools

I'm using xampp as my local server for php projects. I'm searching for a tool to update css changes automatically which i done through chrome inspect element.

What i'm doing now is,

• Open my project in chrome (localhost/project)
• Right click and Inspect element
• change css (lets say change color of h1 tag)
• copy those and past it into my style.css

What i want to do is

• Open my project in chrome (localhost/project)
• Right click and Inspect element
• change css (lets say change color of h1 tag)
• auto update changes (change color of h1 tag) in style.css

Is there any tool or script available to achieve this ?

I just learnt that it is possible. Here are the instructions (or view this page for up-to-date instructions):

• Open Chrome Developer Tools
• Click on Settings icon (the ⠇ icon at the top right corner of dev tools)
• Click on Workspace tab
• Click on Add folder button and choose the local folder that contains the desired files (e.g. C:\www\project\)
• If a warning appears, click Allow

Next step:

• Open the desired webpage (e.g. http://localhost/project/)
• Open the Sources tab in dev tools
• Open the Navigator panel if necessary (it is the left column in sources tab, click left triangle icon just below the top left corner of dev tools to open it)
• Scroll down to the bottom of the list where you will find the workspace folder added earlier
• Expand the folder and locate the desired file (e.g. css/styles.css)
• Right click on the file and choose Map to network resource...
• A list will popup that shows a complete or filtered list of files loaded by the webpage
• Choose the URL that corresponds to the selected local file (e.g. http://localhost/project/css/styles.css)
• When a warning appears about restarting dev tools, click OK

Now you can:

• Inspect an element and edit its CSS, the changes will be saved to local file immediately
• Edit a mapped file in source panel, the changes will be saved to local file when you Save the file
• Edit a mapped file in you favorite editor outside chrome; when you switch back to Chrome it will reload the file/update the styles automatically