CSS Pseudo-elements in 100 Seconds Dive into the world of CSS pseudo-elements! Learn how to use ::before and ::after to add stylistic content without altering your HTML. Perfect for adding icons ...

A CSS pseudo-element is used to style specified parts of an element. It can be used to style the first letter, or line, of an element and insert content before, or after, the content of an element.

He uses small background images that are places with CSS. Then, the classNames for the form elements are swithced with JavaScript. Marko also uses JavaScript to preloaded the custom images.