Bubble Float Bottom Hover Effect
The button floats up and a speech bubble tail slides out from underneath, turning it into a chat bubble. The tail is a CSS border triangle that starts tucked behind the button's bottom edge.
Also known as: hvr-bubble-float-bottom, speech bubble button hover, tooltip tail hover css.
HTML
<button class="hfx-bubble-float-bottom">Say hello</button>
CSS
.hfx-bubble-float-bottom {
--c: var(--hfx-color, #3b82f6);
display: inline-flex;
align-items: center;
gap: 0.5em;
padding: 0.7em 1.6em;
border-radius: 0.5em;
font: 600 var(--hfx-size, 16px) system-ui, sans-serif;
cursor: pointer;
border: 0;
background: var(--c);
color: #fff;
position: relative;
transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);}
.hfx-bubble-float-bottom::before {
content: "";
position: absolute;
top: 100%;
left: 50%;
border: 0.55em solid transparent;
border-bottom: 0;
border-top-color: var(--c);
transform: translate(-50%, -0.6em);
transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.hfx-bubble-float-bottom:is(:hover, :focus-visible) {
transform: translateY(-0.55em);
}
.hfx-bubble-float-bottom:is(:hover, :focus-visible)::before {
transform: translate(-50%, -1px);
}
@media (prefers-reduced-motion: reduce) {
.hfx-bubble-float-bottom, .hfx-bubble-float-bottom *, .hfx-bubble-float-bottom::before, .hfx-bubble-float-bottom::after, .hfx-bubble-float-bottom *::before, .hfx-bubble-float-bottom *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--hfx-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--hfx-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.