3. Understanding the Example Codes for Up/Down Triangles in HTML
   HTML:Up triangle: ▲ or <Up triangle: ▲ or <Up triangle: ↑Up triangle: ↑CSS:Content property: You can use the content property in CSS to insert content into elements
4. Beyond HTML: Exploring the Secrets of Zalgo Text with Unicode
   Imagine letters as individual actors. Unicode is like a giant casting agency for these actors, including letters from many languages and symbols
5. Unlocking the World of Characters: Using Unicode-aware Regular Expressions in JavaScript
   The Problem:Limited Character Classes: JavaScript's default character classes like \w (word character) and \d (digit) only recognize characters from the ASCII range (roughly 0-127). This means they won't match characters like accented letters (á, è, ñ) or characters from other writing systems (e.g., Chinese