Self-Drawing Connector Stepper

<div class="nuda-st2-line-draw">
  <div class="nuda-st2-line-draw__track">
    <span class="nuda-st2-line-draw__fill"></span>
  </div>
  <div class="nuda-st2-line-draw__nodes">
    <span class="is-done">1</span>
    <span class="is-done">2</span>
    <span class="is-active" aria-current="step">3</span>
    <span>4</span>
  </div>
</div>

.nuda-st2-line-draw {
  width: 100%;
  max-width: 280px;
  padding: 14px 0 4px;
}

.nuda-st2-line-draw__track {
  position: relative;
  height: 2px;
  margin: 0 15px;
  background: rgba(255,255,255,.08);
}

.nuda-st2-line-draw__fill {
  position: absolute;
  inset: 0;
  background: #e4ff54;
  transform-origin: left;
  transform: scaleX(0);
  animation: _nuda-st2linedraw-grow 1.4s cubic-bezier(.16,1,.3,1) .1s forwards;
}

.nuda-st2-line-draw__nodes {
  display: flex;
  justify-content: space-between;
  margin-top: -15px;
}

.nuda-st2-line-draw__nodes span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #0c0c10;
  border: 2px solid rgba(255,255,255,.12);
  color: #a0a0a8;
  font-size: 11px;
  font-weight: 700;
  transition: border-color .3s,color .3s,background .3s;
}

.nuda-st2-line-draw__nodes span.is-done {
  border-color: #e4ff54;
  background: #e4ff54;
  color: #09090b;
}

.nuda-st2-line-draw__nodes span.is-active {
  border-color: #e4ff54;
  color: #e4ff54;
}

@keyframes _nuda-st2linedraw-grow {
  to {
    transform: scaleX(.66);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-st2-line-draw__fill {
    animation: none;
    transform: scaleX(.66);
  }
}