Advise - ( Pop Out Menu ) What technology does amazon use?

hello guys,
Does anyone know what technology amazon uses for the pop out menu

  1. I want to develop a similar menu, that pops out and can have multiple menus, pictures and sub menus

  2. I also noticed some of the images pop out slightly

Please advise

many thanks


Just as a guess I would expect that they’d be using HTML, CSS, and JavaScript.