Floating Action Dock

<div class="nuda-fab is-open">
  <button class="nuda-fab__main" aria-label="Open actions">
    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor"
         stroke-width="2" stroke-linecap="round">
      <path d="M12 5v14M5 12h14" />
    </svg>
  </button>
  <div class="nuda-fab__items">
    <button class="nuda-fab__item" style="--d: 0ms">📄</button>
    <button class="nuda-fab__item" style="--d: 60ms">🖼️</button>
    <button class="nuda-fab__item" style="--d: 120ms">🎵</button>
    <button class="nuda-fab__item" style="--d: 180ms">💻</button>
  </div>
</div>

const fab = document.querySelector('.nuda-fab');
fab.querySelector('.nuda-fab__main').addEventListener('click', () => {
  fab.classList.toggle('is-open');
});

.nuda-fab {
  position: relative;
  width: 46px;
  height: 46px;
}

.nuda-fab__main {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  background: #e4ff54;
  color: #09090b;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 22px -8px rgba(228,255,84,.6);
  transition: transform .35s cubic-bezier(.34,1.56,.64,1);
}

.nuda-fab__main svg {
  width: 18px;
  height: 18px;
  transition: transform .35s cubic-bezier(.16,1,.3,1);
}

.nuda-fab.is-open .nuda-fab__main {
  transform: rotate(45deg);
}

.nuda-fab__items {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.nuda-fab__item {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.08);
  background: #111114;
  color: #fafafa;
  font-size: 14px;
  cursor: pointer;
  opacity: 0;
  transform: scale(.4) translateY(8px);
  transition: opacity .35s,transform .45s cubic-bezier(.34,1.56,.64,1);
  transition-delay: var(--d, 0ms);
  box-shadow: 0 4px 12px -4px rgba(0,0,0,.6);
}

.nuda-fab.is-open .nuda-fab__item {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.nuda-fab__item:hover {
  transform: scale(1.1);
}