Use Visual Studio Code in the Browser
How great is that? Now we can use VS Code in the Browser by navigating to vscode.dev. It´s possible to create and edit documents in GitHub repositories as well as working with local files.
You can create a new file in the web just as you would in a desktop VS Code environment, using File > New File from the Command Palette (F1).
See the announcement. There are limitations. You wouldn´t have a Terminal window, for example, but editing something on your blog just inside your GitHub repository works much better now.