Cannot get the same CSS color style as shown on https://uiwjs.github.io/react-codemirror/

Hi, I want to get the same color CSS styling as shown on https://uiwjs.github.io/react-codemirror/ for theme: dark and language: JSON

But when I tried it with react-codemirror ("@uiw/react-codemirror": "^4.23.8"):

                        <CodeMirror
                            value={{ JSON .... }}
                            minHeight={"120px"}
                            theme={basicDark}
                            extensions={[
                                basicDark,
                                javascript({ jsx: true }),
                                // EditorView.lineWrapping
                            ]}
                            onChange={onChange}
                        />

it looks like this instead:

On the online example the HTML for the JSON "message": "Network Error" have seperate CSS classes for the JSON key and value:

But the one on my localhost both JSON key and value have the same class:

It seems my localhost react-codemirror is missing alot of classes and styling, why is that?

Does anyone know why this is happening?

Why is it that the outcome is different from the example shown on https://uiwjs.github.io/react-codemirror/?

Start with the CodeMirror component configuration shown in the issue, especially the theme and extensions using basicDark and javascript({ jsx: true }). Compare it with the online react-codemirror example for dark-theme JSON rendering and identify why the local output differs. Done means the configuration or documentation explains the styling difference and produces the expected key and value classes.