This example demonstrates a minimal React application that calculates and displays the squares of the numbers 1 through 5. The page renders the resulting array of squared values as a single text string, using ReactDOM to mount the component into the root div. The code also logs the value of square of 5 to the browser console, and includes an unused HTML element with red styling. It relies on the React 16.10.0 production library and renders through a bundled JavaScript file.