CSS Accordion with Radio Buttons
An FAQ accordion where every header is a radio, so opening one closes the rest. Panels ease open with the grid-template-rows 0fr to 1fr trick and the chevron flips.
Also known as: css accordion radio button, pure css accordion, exclusive accordion css.
Most orders arrive in 2 to 4 days.
Yes, free returns within 30 days.
To 40 countries, duties included.
HTML
<div class="rad-radio-accordion" role="radiogroup" aria-label="FAQ">
<div class="rad-radio-accordion-item">
<label><input type="radio" name="rad-radio-accordion" value="shipping" checked><span>How fast is shipping?</span><svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6 9l6 6 6-6"/></svg></label>
<div class="rad-radio-accordion-body"><p>Most orders arrive in 2 to 4 days.</p></div>
</div>
<div class="rad-radio-accordion-item">
<label><input type="radio" name="rad-radio-accordion" value="returns"><span>Can I return it?</span><svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6 9l6 6 6-6"/></svg></label>
<div class="rad-radio-accordion-body"><p>Yes, free returns within 30 days.</p></div>
</div>
<div class="rad-radio-accordion-item">
<label><input type="radio" name="rad-radio-accordion" value="abroad"><span>Do you ship abroad?</span><svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6 9l6 6 6-6"/></svg></label>
<div class="rad-radio-accordion-body"><p>To 40 countries, duties included.</p></div>
</div>
</div>CSS
.rad-radio-accordion {
--c: var(--rad-color, #3b82f6);
font-size: var(--rad-size, 18px);
display: grid;
width: 17em;
border: 1px solid color-mix(in srgb, currentColor 15%, transparent);
border-radius: 0.8em;
font-family: system-ui, sans-serif;
line-height: 1.2;
}
.rad-radio-accordion-item + .rad-radio-accordion-item {
border-top: 1px solid color-mix(in srgb, currentColor 12%, transparent);
}
.rad-radio-accordion label {
position: relative;
display: flex;
align-items: center;
gap: 0.6em;
padding: 0.6em 0.9em;
border-radius: 0.7em;
font-size: 0.9em;
font-weight: 600;
cursor: pointer;
transition: color 0.25s ease;
}
.rad-radio-accordion label span {
flex: 1;
}
.rad-radio-accordion input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.rad-radio-accordion svg {
flex: none;
width: 1.1em;
height: 1.1em;
fill: none;
stroke: currentColor;
stroke-width: 2.2;
stroke-linecap: round;
stroke-linejoin: round;
color: color-mix(in srgb, currentColor 50%, transparent);
transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1), color 0.25s ease;
}
.rad-radio-accordion label:hover svg {
color: var(--c);
}
.rad-radio-accordion-item:has(:checked) label {
color: var(--c);
}
.rad-radio-accordion-item:has(:checked) svg {
color: var(--c);
transform: rotate(180deg);
}
.rad-radio-accordion label:has(:focus-visible) {
outline: 0.12em solid var(--c);
outline-offset: -0.15em;
}
.rad-radio-accordion-body {
display: grid;
grid-template-rows: 0fr;
transition: grid-template-rows 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}
.rad-radio-accordion-body p {
min-height: 0;
margin: 0;
padding: 0 1.05em;
overflow: hidden;
font-size: 0.8em;
line-height: 1.45;
color: color-mix(in srgb, currentColor 70%, transparent);
opacity: 0;
transition: opacity 0.2s ease, padding 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}
.rad-radio-accordion-item:has(:checked) .rad-radio-accordion-body {
grid-template-rows: 1fr;
}
.rad-radio-accordion-item:has(:checked) .rad-radio-accordion-body p {
padding-bottom: 0.8em;
opacity: 1;
transition: opacity 0.3s ease 0.15s, padding 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}
@media (prefers-reduced-motion: reduce) {
.rad-radio-accordion, .rad-radio-accordion *, .rad-radio-accordion::before, .rad-radio-accordion::after, .rad-radio-accordion *::before, .rad-radio-accordion *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--rad-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--rad-size. Every other dimension is inem, so the whole thing scales together. Currently previewing18px. - 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.