this is the class of the header I mentioned above
Go to qa-include/qa-lang-main.php
Look for 'all_categories' => 'All categories', ans you can change it to 'all_categories' => 'what-ever-you-want',
What do you mean with The header all categories?
For categories, it's included in function sidepanel(), you can target categories like this function nav('cat')
For categories class: CLASS="qa-nav-cat"
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