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    <title>My webpage</title>
    <h2>Welcome to my HTML tutorial</h2>
    <p>Click the button below to begin</p>
    <button id="btn-1" class="my-btn">CLICK ME</button>


                body {
  font-family: monospace;
  padding: 20px;

button {
  border: 1px solid black;
  background-color: rgba(0,0,0,0.1);
  padding: 10px;
  font-family: monospace;
  margin-top: 10px;

button:hover {
  background-color: white;
  border: 1px solid grey;
  cursor: pointer;


                const myButton = document.querySelector('#btn-1');

// eventObj is automatically passed as an argument to this callback function 
function respondToClick(eventObj) {
  const randomNum = Math.floor(Math.random() * 100);
  const pContent = 'The random number is: ' + randomNum;
  const newElement = document.createElement('p');
  const newTextNode = document.createTextNode(pContent);

// Pass in a callback function for this click event
myButton.addEventListener('click', respondToClick);