I would add by typoscript a CSS class to a menu item. It should stand as a class, the category of the page. How can I do that?
MAIN_NAV.1.NO = 1
MAIN_NAV.1.NO {
linkWrap = <h4>|</h4>
wrapItemAndSub = <li class="section **{field:sys_categories.title}**">|</li>||<li class="section">|</li>||<li class="section">|</li>||<li class="section">|</li>
wrapItemAndSub.insertData = 1
}