Frontend Web Development Bootcamp - Build a Twitter Clone - Pseudo Elements

The video tutorial introduces pseudo elements in CSS, explaining the difference between pseudo classes and pseudo elements. It covers three commonly used pseudo elements: first letter, before, and after. The tutorial demonstrates how to style the first letter of an element, insert content before an element using the before pseudo element, and insert content after an element using the after pseudo element. Each pseudo element is explained with practical examples, highlighting their usage and styling capabilities.

Explain how the 'after' pseudo element functions in CSS.

What are the three commonly used pseudo elements mentioned in the lecture?