By default, observation occurs on the first `<main>` element, but you can change this behavior by passing the first argument in `{HTMLElement}` format to `new e.detail.reinitializer()`
By default, after reinitialization, `<link>` elements are moved to the end of the `<head>` element, and `<script>` elements are moved to the end of the `<body>` element. You can override this behavior by changing the `reinitializer.js` and `reinitializer.css` properties.