I'm not sure what you mean.
For example, the code pasted into the first code block under HTML was:
<h4>
<span class="typed-words"></span>
</h4>
This was the associated code injection in the Footer:
<script>
var options = {
strings: [' apply firm format', ' scrub document', ' highlight placeholders', ' go to s.3(a)(ii)', ' bold headings'],
typeSpeed: 100,
backSpeed: 50,
backDelay: 500,
startDelay: 1000,
loop: true,
};
var typed = new Typed('.typed-words', options);
</script>
I created similar classes and associated code injections for the other code blocks.