wordpress theme basics including CSS and js

To modify a WordPress theme's CSS and JavaScript, follow these steps:

1. Access your WordPress dashboard and go to "Appearance" and then "Editor".
2. In the "Theme Files" section on the right, select the file you want to edit (e.g., "style.css" for CSS or "functions.php" for JavaScript).
3. Make your desired changes in the selected file.
4. Once you have made the changes, be sure to save the file by clicking the "Update File" button.