I have used child theme for twenty twelve theme as the following comment in my style.css looks like:
Theme Name: W3Arabic
Description: This theme was designed for W3ARABIC institute for free online programming languages courses.
Theme URI: http://www.w3arabiconline.com/wp-content/themes/W3ARABIC
Author: Ayman Mosully
when I used import function in the style sheet file, I did not see my theme in Appearance setting just this message:
The following themes are installed but incomplete. Themes must have a stylesheet and a template.
W3Arabic The parent theme is missing. Please install the "Twentytwelve" parent theme.
It is working in my localhost but when I have sent it via FTP, I that problem happened to me.
Could you help me?