5. Go to File → Save As.
6. In the Save As dialog box, select a location in the Local Site folder.
If you have only one external stylesheet, it can be saved at the top level of the Local Site
folder. If you have more than one external stylesheet, usually they are saved in a subfolder
named “css”.
7. In the File name field, enter a file name with the ending .css, such as styles.css.
8. Click Save.