What would be the best approach to create and use a child theme with a parent theme that uses Option Tree? Does Option require the css pages with actual styling to be in their own directory and the use of a "dummy" style.css page at the root? I purchased a premium theme that uses Option Tree and this is the setup it has. the style.css that is at the root directory shows "WP Core Styles." The Template styles, file.php, are in a directory named css. Is this typical for Option Tree?