How to Edit a WordPress CSS File

1. Open the page you wish to edit, and click on 'View' then 'Source' from your browser's menu. This will open an HTML page in a text-only program such as NotePad or SimpleText.
2. Scroll through the HTML page and locate the style.css file. Double-click the file name.

3. Make a copy of the file and work from the copy.
4. Locate the attribute you want to edit. The attributes will be identified by names indicating sections such as body, header and content.
5. Make your changes to the code displayed between the curly brackets, which look like { and }. These changes can be either to adjust margins, font sizes, colors or other style elements you want to edit.
6. Remove the text for any codes you are replacing. For example, if you have changed your font color from blue to black be sure to delete the word 'blue' from that line of code.
7. Save your changes and upload the file to your WordPress site using an FTP client.
8. Open your page in a browser to view your edits.