Emoji Reaction Tooltip
Hover a reaction chip to see who reacted: the emoji pops out large with a wiggle above the names. The chip's own emoji hops at the same moment, so the two read as one gesture.
Also known as: who reacted tooltip, slack reaction tooltip css, reaction count hover.
Maya, Leo and 10 others reacted with :tada:
HTML
<span class="tip-emoji-reaction"> <button type="button" aria-label="Party popper, 12 reactions" aria-describedby="tip-emoji-reaction-tip"><span class="tip-emoji-reaction-small" aria-hidden="true">🎉</span>12</button> <span class="tip-emoji-reaction-tip" id="tip-emoji-reaction-tip" role="tooltip"><span class="tip-emoji-reaction-big" aria-hidden="true">🎉</span>Maya, Leo and 10 others reacted with :tada:</span> </span>
CSS
.tip-emoji-reaction {
--c: var(--tip-color, #3b82f6);
font-size: var(--tip-size, 16px);
position: relative;
display: inline-flex;
margin-top: 6.5em; /* room for the tooltip in this preview */
}
.tip-emoji-reaction button {
display: inline-flex;
align-items: center;
gap: 0.35em;
padding: 0.3em 0.7em 0.3em 0.55em;
border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
border-radius: 2em;
background: color-mix(in srgb, var(--c) 12%, transparent);
color: var(--c);
font: 700 0.9em/1.4 system-ui, sans-serif;
cursor: pointer;
transition: background-color 0.2s ease;
}
.tip-emoji-reaction:hover button { background: color-mix(in srgb, var(--c) 22%, transparent); }
.tip-emoji-reaction button:focus-visible {
outline: 2px solid var(--c);
outline-offset: 2px;
}
.tip-emoji-reaction-small {
display: inline-block;
font-size: 1.15em;
}
.tip-emoji-reaction:hover .tip-emoji-reaction-small,
.tip-emoji-reaction:focus-within .tip-emoji-reaction-small {
animation: tip-emoji-reaction-hop 0.5s cubic-bezier(0.3, 0.7, 0.4, 1);
}
.tip-emoji-reaction-tip {
position: absolute;
bottom: calc(100% + 0.7em);
left: 50%;
z-index: 10;
box-sizing: border-box;
width: 14.5em;
padding: 0.7em 1em 0.8em;
border-radius: 0.7em;
background: color-mix(in srgb, var(--c) 14%, #0f172a);
box-shadow: 0 0 0 1px rgb(255 255 255 / 0.07), 0 0.6em 1.2em -0.5em rgb(0 0 0 / 0.5);
color: rgb(255 255 255 / 0.85);
font: 500 0.8em/1.4 system-ui, sans-serif;
text-align: center;
opacity: 0;
visibility: hidden;
pointer-events: none;
transform-origin: 50% 100%;
transform: translate(-50%, 0.4em) scale(0.92);
transition: opacity 0.18s ease, transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.3s;
}
.tip-emoji-reaction-tip::before {
content: "";
position: absolute;
top: 100%;
left: 50%;
width: 0.65em;
height: 0.65em;
background: inherit;
transform: translate(-50%, -50%) rotate(45deg);
}
.tip-emoji-reaction-big {
display: block;
width: 1.5em;
margin: 0 auto 0.2em;
font-size: 1.9em;
line-height: 1.3;
}
.tip-emoji-reaction:hover .tip-emoji-reaction-tip,
.tip-emoji-reaction:focus-within .tip-emoji-reaction-tip {
opacity: 1;
visibility: visible;
transform: translate(-50%, 0) scale(1);
}
.tip-emoji-reaction:hover .tip-emoji-reaction-big,
.tip-emoji-reaction:focus-within .tip-emoji-reaction-big {
animation: tip-emoji-reaction-pop 0.7s cubic-bezier(0.3, 0.7, 0.4, 1) 0.08s both;
}
@keyframes tip-emoji-reaction-pop {
0% { opacity: 0; transform: scale(0.3) rotate(-25deg); }
45% { opacity: 1; transform: scale(1.2) rotate(12deg); }
65% { transform: scale(0.95) rotate(-6deg); }
82% { transform: scale(1.03) rotate(2deg); }
100% { opacity: 1; transform: scale(1) rotate(0); }
}
@keyframes tip-emoji-reaction-hop {
0%, 100% { transform: translateY(0) scale(1); }
35% { transform: translateY(-0.35em) scale(1.15) rotate(-10deg); }
65% { transform: translateY(0.05em) scale(0.95, 1.05); }
}
@media (prefers-reduced-motion: reduce) {
.tip-emoji-reaction, .tip-emoji-reaction *, .tip-emoji-reaction::before, .tip-emoji-reaction::after, .tip-emoji-reaction *::before, .tip-emoji-reaction *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--tip-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--tip-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.