RockSolid Mega Menu Contao Extension Installation $ composer require madeyourday/contao-rocksolid-mega-menu Documentation: English: https://rocksolidthemes.com/en/contao/plugins/mega-menu German: https://rocksolidthemes.com/de/contao/plugins/mega-menu License English: https://rocksolidthemes.com/en/contao/license German: https://rocksolidthemes.com/de/contao/lizenzbedigungen