Plus-Minus Accordion

<div class="nuda-accx-pm">
  <div class="nuda-accx-pm__item nuda-accx-pm__item--open">
    <button class="nuda-accx-pm__trigger" aria-expanded="true">
      <span class="nuda-accx-pm__label">What is NudaUI?</span>
      <span class="nuda-accx-pm__icon nuda-accx-pm__icon--minus">&#8722;</span>
    </button>
    <div class="nuda-accx-pm__body">
      <p class="nuda-accx-pm__text">A copy-paste UI library built for dark interfaces with zero dependencies.</p>
    </div>
  </div>
  <div class="nuda-accx-pm__item">
    <button class="nuda-accx-pm__trigger" aria-expanded="false">
      <span class="nuda-accx-pm__label">Is it free to use?</span>
      <span class="nuda-accx-pm__icon">&#43;</span>
    </button>
  </div>
  <div class="nuda-accx-pm__item">
    <button class="nuda-accx-pm__trigger" aria-expanded="false">
      <span class="nuda-accx-pm__label">How do I install it?</span>
      <span class="nuda-accx-pm__icon">&#43;</span>
    </button>
  </div>
</div>

.nuda-accx-pm {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 2px;
}

.nuda-accx-pm__item {
  background: #141414;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  overflow: hidden;
}

.nuda-accx-pm__item--open {
  border-color: rgba(228,255,84,.25);
}

.nuda-accx-pm__trigger {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  padding: .55rem .7rem;
  cursor: pointer;
  gap: .5rem;
}

.nuda-accx-pm__label {
  color: #fafafa;
  font-size: .68rem;
  font-weight: 600;
  text-align: left;
}

.nuda-accx-pm__icon {
  color: #777;
  font-size: .9rem;
  flex-shrink: 0;
  line-height: 1;
  transition: color .2s;
}

.nuda-accx-pm__icon--minus {
  color: #e4ff54;
}

.nuda-accx-pm__body {
  padding: 0 .7rem .55rem;
  animation: _nuda-accxpm-open .25s ease-out;
}

.nuda-accx-pm__text {
  color: #888;
  font-size: .6rem;
  margin: 0;
  line-height: 1.55;
}

@keyframes _nuda-accxpm-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-accx-pm__body {
    animation: none;
  }
}