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<!-- you may want to start your body element off with a class -->
<input id='toggle' class='toggle' type='checkbox'>
<label for='toggle'><span class='type'></span></label>

<h1>JS Style class toggler thingy</h1>

<p>This is a right of passage.</p>

<p>(but there are many different ways to do something like this - that we will talk about later)</p>



body {
  font-family: sans-serif;
  color: var(--pe-purple);
  /* some things may be the default stuff like some padding? */

body .type::after {
  content: 'new style?';
} {
  background-color: var(--pe-red);
  color: var(--pe-yellow);
} .type::after {
  content: 'toggle to hot';

body.cold {
  background-color: var(--pe-cyan);
  color: var(--pe-blue-dark);

body.cold .type::after {
  content: 'toggle to cold';

/* one of these could surely be the default - intead of having a neutral to start out with */



// search the compiled HTML document (document object model) DOM
// understand a few elements
var body = document.querySelector('body');
var toggle = document.querySelector('.toggle');

// define the action
function toggleStyles(event) {
  if ( {
  } else {
} // a bit naive - because what if there are 30 styles! but totally normal to start the process

// use the action when the toggle is clicked
toggle.addEventListener('click', toggleStyles);