JSFiddle - React, Tailwind, and code Playground

JavaScript

$(document).ready(function() {

	$(window).scroll(function() {
		var yoba = $(this).scrollTop();

		if (yoba >= $('#wrapper').offset().top) {
			$('#button').css('position', 'fixed');
		} else {
			$('#button').removeAttr('style');
		}
	});
});