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HTML 

              
                <main>
	<section>
		<div>
			<button data-cooltipz-dir="left" aria-label="Hello there!">Left</button>
			<button data-cooltipz-dir="top" aria-label="Hello there!">Top</button>
			<button data-cooltipz-dir="bottom" aria-label="Hello there!">Bottom</button>
			<button data-cooltipz-dir="right" aria-label="Hello there!">Right</button>
		</div>
		<div>
			<button data-cooltipz-dir="bottom-left" aria-label="Hello there!">Bottom left</button>
			<button data-cooltipz-dir="top-left" aria-label="Hello there!">Top left</button>
			<button data-cooltipz-dir="top-right" aria-label="Hello there!">Top right</button>
			<button data-cooltipz-dir="bottom-right" aria-label="Hello there!">Bottom right</button>
		</div>
		<div>
			<button data-cooltipz-dir="top" data-cooltipz-size="small" aria-label="Hello there! I am a small tooltip and I will wrap the text within me.">
				Small
			</button>
			<button data-cooltipz-dir="top" data-cooltipz-size="medium" aria-label="Hello there! I am a medium tooltip and I will wrap the text within me. I'm wider thhan the small tooltip.">
				Medium
			</button>
			<button data-cooltipz-dir="top" data-cooltipz-size="large" aria-label="Hello there! I am a large tooltip and I will wrap the text within me. I'm wider thhan the small and the medium tooltip.">
				Large
			</button>
			<button style="min-width: 8rem;" data-cooltipz-dir="top" data-cooltipz-size="fit" aria-label="Hello there! I am a 'fit' tooltip and I will wrap the text within me. My width will always be equal to the width of my parent element.">
				Fit
			</button>
		</div>
		<div>
			<button data-cooltipz-dir="top" data-cooltipz-static aria-label="Hello there!">
				No animation
			</button>
			<button data-cooltipz-dir="top" data-cooltipz-visible aria-label="Hello there!">
				Visible
			</button>
		</div>
		<div>
			<button data-cooltipz-dir="top" aria-label="HTML character codes: &copy; &reg; &#9742; &#9850; &#8709;">HTML Codes &#9835;</button>
			<button data-cooltipz-dir="top" aria-label="Emojis: 😎🚗🍔💩👏✔❤">Emojis 😎</button>
			<button data-cooltipz-dir="top" aria-label="Multilingual: こんにちは | ਸਤ ਸ੍ਰੀ ਅਕਾਲ | हैलो">Multilingual</button>
			<button data-cooltipz-dir="top" aria-label="Font Awesome: &#xf03e; &#xf200; &#xf188; &#xf007;">Font Awesome</button>
		</div>
	</section>
	<p>Made with <span aria-label="coolness" data-cooltipz-dir="top">😎</span> by <a href="https://jackdomleo.dev" rel="nofollow" target="_blank" class="link">Jack Domleo</a></p>
</main>
!

CSS 

              
                :root {
	--cooltipz-fontawesome: FontAwesome;
}

/* Nothing to do with Cooltipz.css, just making the examples look pretty */

body {
	min-height: 100%;
	font-family: Verdana, Arial, sans-serif;
	padding-bottom: 2rem;
}

body,
main,
section {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	text-align: center;
}

main {
	div {
		margin: 2rem;
		display: flex;
		align-items: center;
		gap: 0.5rem;
		justify-content: center;
		flex-wrap: wrap;
	}
}
!

JS 

              
                // npm i cooltipz-css --save
//
// yarn add cooltipz-css
//
// https://cooltipz.jackdomleo.dev
//
// Created by Jack Domleo
// https://jackdomleo.dev | @JackDomleo
//
// If you can customise any other tooltips that you'd like to have featured on here, tweet about it on Twitter with the hashtag #cooltipzcss and tag @jackdomleo7
!
999px

Console