Introduction

[MUSIC] 0:00 CSS, or Cascading Style Sheets, are an important part of web design and 0:09 frontend development. 0:13 CSS provides the presentation layer that can turn unexciting HTML into a beautiful, 0:14 vibrant webpage. 0:20 There are lots of concepts and techniques to learn to master CSS. 0:21 But to get started as a full stack JavaScript developer, 0:25 you'll need a basic understanding of CSS and a deeper knowledge of CSS selectors. 0:28 I'm Guil, a JavaScript and frontend web development teacher here at Treehouse. 0:33 In this course I'll teach you what you need to know and understand about CSS 0:37 selectors to begin writing JavaScript programs that make webpages interactive. 0:40 Having a deep knowledge of CSS selectors is incredibly for JavaScript 0:45 developers writing code that works with the DOM, or Document Object Model. 0:50 The DOM is what allows JavaScript to interact with and 0:54 make changes to elements on a webpage. 0:57 You'll learn a whole lot more about working with JavaScript and 0:59 the DOM in another course. 1:02 Coming up in this course, 1:04 we'll start by reviewing the common ways to define a CSS selector. 1:05 For instance, selectors can be defined based on an element's type, ID, 1:09 class or any of its attributes and values. 1:16 You'll then learn how to use psuedo-classes to select elements based on 1:20 user interaction and combinators that target elements based on their position 1:25 and relation to other elements in the DOM. 1:29 And we'll go over CSS selector strategies and best practices for 1:31 working with JavaScript. 1:35 This course is mostly made up of text-based steps to let you 1:36 progress at your own pace. 1:39 You're also going to get plenty of practice opportunities along the way with 1:41 code challenges. 1:44 If you have questions about anything covered in this course, 1:45 feel free to reach out to the Treehouse staff or other students in the community. 1:48 Let's get to it. 1:51