JSFiddle - React, Tailwind, and code Playground

HTML

<h1 style="*::selection{background:red !important; /* RED color */ }">Candy dessert pudding.</h1>
<p style="*::selection{background:red !important; /* RED color */ }">Unerdwear.com jelly beans lollipop tiramisu toffee cake topping gummies muffin. Lemon drops jelly sweet. Liquorice toffee pastry. Soufflé sesame snaps lemon drops liquorice donut caramels liquorice tootsie roll dessert. Tiramisu oat cake applicake croissant. Dragée soufflé biscuit sugar plum biscuit. Carrot cake danish jelly-o gummi bears cake jelly beans. Gummies liquorice chupa chups apple pie donut muffin sesame snaps carrot cake. Macaroon icing sugar plum. Tootsie roll gummies lemon drops jelly-o. Jujubes sesame snaps carrot cake soufflé. Liquorice jujubes tiramisu wafer jelly.</p>

CSS

::selection {
	background: #00AE68; /* Green color */
	color: #ffe;
	}
::-moz-selection {
	background: #00AE68; /* Green color */
	color: #ffe;
}