Now and then little snippets are pretty useful. For a fix in a Premium-Theme, I needed a kind of evaluation, where I am in the site structure and with little effort I was able to expand the classes and react with CSS.
The following code shows the basic for it and
get_pages() is the key from the core of WordPress to get to these results. This function provides the necessary result of using the parameter and the output via the parameter
sort_order provides the sequence and identification of the first page, which is then either the first or last page in this structure.
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