This tutorial will teach you how to create a multi-column layout using CSS. You will learn how to use the column-count and column-gap properties to create multiple columns, as well as how to use the column-span property to span multiple columns. You will also learn how to
From Wikipedia
Cascading Style Sheets (CSS) is a style sheet language used for specifying the presentation and styling of a document written in a markup language, such as HTML or XML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.