<main>
<h1>Revenge of the <span class="blink">Blink</span> tag!</h1>
  <h2>Do you like the way <span class="blink">I can blink?</span> Don't you miss the <span class="blink">blink</span> tag?</h2>
</main>
body {
  color: white;
  background-color: black;
  display: flex;
  height: 100vh;
}

main {
  margin: auto;
}

h1, h2 {
  font-family: sans-serif;
  text-align: center;
}

span.blink {
  background-color: #B339F9;
  padding: 5px;
}
const blinky = document.querySelectorAll('.blink');

blinky.forEach((span, index) => {
    span.style.backgroundColor = index % 2 === 0 ? '#B339F9' : 'transparent';
  });

let isBackgroundOn = true;
  setInterval(() => {
    isBackgroundOn = !isBackgroundOn;
    blinky.forEach(span => {
      span.style.backgroundColor = isBackgroundOn ? '#B339F9' : 'transparent';
    });
  }, 500);

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.