<span class="a-tooltip with-dots">
    Hover me
    <span class="tooltiptext left">
        Line 1
        <br> Line 2
        <br> Line 3
    </span>
</span>

.a-tooltip {
	position: relative;
	display: inline-block;
}
.a-tooltip .tooltiptext {
	visibility: hidden;
	width: 250px;
	background-color: black;
	color: #fff;
	text-align: center;
	border-radius: 6px;
	padding: 5px;
	position: absolute;
	z-index: 10;
	top: 50%;
	transform: translate(0, -50%);
	left: 100%;
	opacity: 0;
	transition: opacity 0.5s ease;
}
.a-tooltip .tooltiptext::after {
	content: "";
	position: absolute;
	top: 50%;
	right: 100%;
	margin-top: -5px;
	border-width: 5px;
	border-style: solid;
	border-color: transparent black transparent transparent;
}
.a-tooltip:hover .tooltiptext {
	visibility: visible;
	opacity: 1;
	transition: opacity 0.5s ease;
}
.a-tooltip .with-dots {
	border-bottom: 1px dotted black;
}