Animated Fraction

<!-- Animated Fraction -->
<div class="nuda-sc2-fraction" role="img" aria-label="847 of 1,000 seats filled">
  <div class="nuda-sc2-fraction__nums">
    <span class="nuda-sc2-fraction__num">847</span>
    <span class="nuda-sc2-fraction__slash">/</span>
    <span class="nuda-sc2-fraction__den">1,000</span>
  </div>
  <div class="nuda-sc2-fraction__track">
    <span class="nuda-sc2-fraction__fill" style="--f:84.7%"></span>
  </div>
  <span class="nuda-sc2-fraction__label">Seats filled</span>
</div>

.nuda-sc2-fraction {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  width: 150px;
}

.nuda-sc2-fraction__nums {
  display: flex;
  align-items: baseline;
  gap: 4px;
  opacity: 0;
  animation: _nuda-sc2fraction-pop .6s cubic-bezier(.4,0,.2,1) forwards;
}

.nuda-sc2-fraction__num {
  font: 800 24px ui-sans-serif,system-ui;
  color: #fafafa;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.nuda-sc2-fraction__slash {
  font: 500 16px ui-sans-serif,system-ui;
  color: #555;
}

.nuda-sc2-fraction__den {
  font: 600 13px ui-sans-serif,system-ui;
  color: #a1a1aa;
  font-variant-numeric: tabular-nums;
}

.nuda-sc2-fraction__track {
  height: 6px;
  background: rgba(255,255,255,.06);
  border-radius: 3px;
  overflow: hidden;
}

.nuda-sc2-fraction__fill {
  display: block;
  height: 100%;
  width: var(--f);
  background: linear-gradient(90deg,rgba(228,255,84,.6),#e4ff54);
  border-radius: 3px;
  transform: scaleX(0);
  transform-origin: left;
  animation: _nuda-sc2fraction-fill 1.3s cubic-bezier(.4,0,.2,1) .2s forwards;
}

.nuda-sc2-fraction__label {
  font: 500 9px ui-sans-serif,system-ui;
  color: #777;
  text-transform: uppercase;
  letter-spacing: .08em;
}

@keyframes _nuda-sc2fraction-pop {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes _nuda-sc2fraction-fill {
  to {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-sc2-fraction__nums {
    animation: none !important;
    opacity: 1;
    transform: translateY(0);
  }
  .nuda-sc2-fraction__fill {
    animation: none !important;
    transform: scaleX(1);
  }
}