<p>If you have one bucket that contains 2 gallons and another bucket that contains 7 gallons, how many buckets do you have?</p>

p {
	// layout
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	max-width: 30em;
	
	// looks
	background-color: #fff;
	padding: 1.125em 1.5em;
	font-size: 1.25em;
	border-radius: 1rem;
  box-shadow:	0 0.125rem 0.5rem rgba(0, 0, 0, .3), 0 0.0625rem 0.125rem rgba(0, 0, 0, .2);
}

p::before {
	// layout
	content: '';
	position: absolute;
	width: 0;
	height: 0;
	bottom: 100%;
	left: 1.5em; // offset should move with padding of parent
	border: .75rem solid transparent;
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	// looks
	border-bottom-color: #fff;
	filter: drop-shadow(0 -0.0625rem 0.0625rem rgba(0, 0, 0, .1));
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// dressing
html {
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	background: linear-gradient(135deg, #F4F2F3, #BFC6D0);
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html, body {
	height: 100%;
	display:flex;
	justify-content:center;
	align-items:center;
}

body {
	padding: 0 2rem;
}