Modern Web Design with HTML5, CSS3, and JavaScript - Changing First Letter in Pseudo-classes

The video tutorial explains how to transform the first letter of child elements in an HTML document to uppercase, color them red, and set their font size to 2em. It covers selecting elements using CSS selectors and pseudo-elements, applying styles, and verifying changes using developer tools. The tutorial provides a step-by-step guide to implementing these transformations in the source code.

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