In Web Designing we need HTML (Hypertext Markup Language), CSS (Cascading Style Sheet) and JavaScript and some other language also as we need.
HTML, CSS and JavaScript are very important in Web Designing.
HTML is used for creating structure of website.
CSS is used for presentation of website.
JavaScript is used for behavior of website.
PHP (or similar) are used for backend.
CMS used for content management.
Read next
From @catharsis