The View Code Panel is mainly for getting the code to modify it base on the user's preference.
To make use of the code follow these steps. Take note you must have a code editor and a local development server to view the extracted page. You can use VS code for this and Live Server extension from Microsoft:
Step 1 - Create a folder and make two files: index.html and style.css. Copy the code from editor into their respective files.
Step 2 - Don't forget to reference the CSS file into the html file otherwise it won't look good.