<p>Welcome! Nice to see you! 😃</p>
Rendered Output
<style>
    button::before {
        content: "🧡";
    }

</style>
<button type="button">Like!</button>
Rendered Output
<p>Smiling face emoji: 😃</p>
<p>Heart emoji: <span style="font-size:2em;">&#129505;</span></p>
Rendered Output