The code for cssSelectors.html is: <!DOCTYPE html> <html lang="en"> <head> <title>CSS CSS collapse</title> <meta charset="utf-8"> <style> * { font-style: italic; } p { color: red; } .myClass { text-decoration: underline; } #myId { font-family: monospace; font-size: 0.5rem; } p#myId.myClass { font-size: 1.5rem; } </style> </head> <body> <h1>CSS CSS collapse</h1> <p class="myClass" id="myId">I match everything.</p> <p>I match the universal and type selectors only.</p> <p>I am <code>2rem</code> below the element above.</p> </body> </html>