Expanding Icon Button Hover
A round icon button that stretches into a pill and slides its label out to the right. The label column animates from 0fr to 1fr, so no width needs to be hard-coded.
Also known as: icon button expand on hover, circle to pill button, hover reveal label button.
HTML
<button class="hfx-icon-expand-label"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 11.5a8.4 8.4 0 0 1-12.2 7.5L3 21l2-5.3A8.5 8.5 0 1 1 21 11.5Z"/></svg><span class="hfx-icon-expand-label-label"><span>Chat with us</span></span></button>
CSS
.hfx-icon-expand-label {
--c: var(--hfx-color, #3b82f6);
font-size: var(--hfx-size, 16px);
display: inline-grid;
grid-template-columns: 1.4em 0fr;
align-items: center;
height: 3.5em;
padding: 0 1.05em;
border: 0;
border-radius: 1.75em;
background: var(--c);
color: #fff;
font-family: system-ui, sans-serif;
font-weight: 600;
cursor: pointer;
box-shadow: 0 0.35em 0.9em color-mix(in srgb, var(--c) 25%, transparent);
transition: grid-template-columns 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.hfx-icon-expand-label svg {
width: 1.4em;
height: 1.4em;
transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.hfx-icon-expand-label-label {
overflow: hidden;
white-space: nowrap;
}
.hfx-icon-expand-label-label > span {
display: block;
padding: 0 0.3em 0 0.65em;
opacity: 0;
transform: translateX(-0.6em);
transition: opacity 0.2s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.hfx-icon-expand-label:is(:hover, :focus-visible) { grid-template-columns: 1.4em 1fr; }
.hfx-icon-expand-label:is(:hover, :focus-visible) svg { transform: rotate(-12deg); }
.hfx-icon-expand-label:is(:hover, :focus-visible) .hfx-icon-expand-label-label > span {
opacity: 1;
transform: translateX(0);
transition-delay: 0.1s;
}
@media (prefers-reduced-motion: reduce) {
.hfx-icon-expand-label, .hfx-icon-expand-label *, .hfx-icon-expand-label::before, .hfx-icon-expand-label::after, .hfx-icon-expand-label *::before, .hfx-icon-expand-label *::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.