try-noscript-style.php

<?php
/*
 * Plugin Name: Try Noscript Style
 * Plugin URI: https://wordpress.org/support/topic/amp-issues-detected-by-google-search-console/
 * Author: Weston Ruter
 */

add_action(
	'wp_head',
	function() {
		?>
		<noscript><style type="text/css"> .wpb_animate_when_almost_visible { opacity: 1; }</style></noscript>
		<?php
	}
);

add_action(
	'wp_footer',
	function() {
		?>
		<p class="wpb_animate_when_almost_visible">test</p>
		<?php
	}
);