например
@keyframes pulse {
0% {
opacity: .5;
transform: translate(-50%, -100%) scale(.5);
}
50%{
opacity: 1;
transform: translate(-50%, -100%) scale(1.2);
}
100% {
transform: translate(-50%, -100%) scale(1);
}
}
.tooltip span
{
color: #000;
text-decoration: none;
transform: translate(-50%, -100%) scale(.5);
position: absolute;
background-color: #292929;
color: white;
padding: 0.5rem 1rem;
border-radius: 4px;
font-size: 1rem;
font-weight: 400;
text-align: center;
box-shadow: 0 0 4px 2px rgba(0,0,0,.2);
width: max-content;
max-width: 200px;
top:0;
left:50%;
margin-top: -18px;
visibility: hidden;
opacity: 0;
}
.tooltip:hover{
position: relative;
}
.tooltip:hover span
{
opacity: 1;
visibility: visible;
transform: translate(-50%, -100%) scale(1);
animation: pulse 1s;
}
.tooltip:hover span::after
{
top: 100%;
left: 50%;
transform: translateX(-50%);
border: solid transparent;
content: '';
height: 0;
width: 0;
position: absolute;
pointer-events: none;
border-top: 8px solid #292929;
border-right: 8px solid transparent;
border-left: 8px solid transparent;
border-width: 10px;
}
<br>
<br>
<br>
<br>
<table border="1">
<tr>
<td>Hello</td>
<td>
<div class="tooltip">
<span>My Tooltip Text</span>
Cool text
</div>
</td>
<td>
<div class="tooltip">
<span>Lorem ipsum dolor sit amet, consectetur adipiscing elit</span>
Long text
</div>
</td>
</tr>
</table>