This example demonstrates basic DOM manipulation with D3 v4, showing how to select and style individual elements or groups using CSS selectors such as `select("body").select("p")` and `selectAll(".Rhone")`. The code applies colored styles to fruit-named paragraphs—apples become red, all paragraphs become green, and specific classes or IDs receive brown or purple—before removing and appending elements. It also uses `d3.select("body").append("p").text()` to add a new paragraph and `insert("p", "#Lyon")` to place one before another, ultimately removing an element with `remove()`. The visualization is a simple HTML page with static text content.