<div class="sk-glow">
  <div class="sk-glow-bar" style="width: 90%"></div>
  <div class="sk-glow-bar" style="width: 70%"></div>
  <div class="sk-glow-bar" style="width: 80%"></div>
</div>

.sk-glow {
  width: 220px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sk-glow-bar {
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(
    90deg,
    #1a1a22 0%,
    rgba(124, 108, 255, 0.35) 30%,
    rgba(255, 108, 138, 0.35) 60%,
    #1a1a22 100%
  );
  background-size: 200% 100%;
  animation: skGlow 1.8s linear infinite;
}
@keyframes skGlow {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sk-glow,
  .sk-glow * {
    animation: none !important;
  }
}