Below is a complete code example for a Word & Character Counter tool implemented using HTML, CSS, and JavaScript. For this example, I'll utilize Bootstrap for responsive design and jQuery for DOM manipulation. These are popular free libraries for front-end development. ```html

Word & Character Counter

Words: 0 | Characters: 0

``` This code provides a Word & Character Counter tool with colorful styling, responsive design, and dynamic counting using jQuery for DOM manipulation. It utilizes Bootstrap for responsive layout classes.