Extra child theme
Free basic Extra child theme download
This child theme is only for Extra WordPress theme. If you want to modify your theme files and do not want the changes to wipe off during a theme update, you can install Extra theme and then this Child theme.
Once this child theme is activated, it will inherit all the properties of it’s parent theme. If you want to modify certain files like header.php, footer.php or functions.php, you can copy those files from the parent theme and bring them to the folder created by uploading this theme in the theme directory.