I have created a new file in my file manager, named it 2011childtheme..copy & pasted my stlye.css into it but do not know if that’s correct as:
‘The child theme contains a “Template: parent-theme-dir” header to distinguish it from standalone themes’
Mine doesn’t have that and under websitename/wp-content/themes/2011/..there is no 2011childtheme
so not too sure what to do or if I’ve missed something