HTML stands for Hyper Text Markup Language, It is the standard markup language for creating Web pages. You need HTML to describe the structure of a Web page and also consists of a series of elements. HTML elements tell the browser how to display the content and label pieces of content.
CSS stands for Cascading Style Sheets CSS describes how HTML elements are to be displayed on the screen, paper, or in other media CSS saves a lot of work and can control the layout of multiple web pages all at once. External stylesheets are stored in CSS files is a way to layout your content on the web and also a dress for HTML.
A successful online business requires a management System like understanding what potential customers really want, content marketing, paid advertisements, sales funnels, conversion optimization, search engine optimization.