.color-bar-spinner {
  position: relative;
  width: 100%;
  max-width: 300px;
  height: 10px;
  background: linear-gradient(90deg,
      #3498db 25%,
      #e74c3c 25%,
      #e74c3c 50%,
      #f1c40f 50%,
      #f1c40f 75%,
      #2ecc71 75%);
  background-size: 200% 100%;
  animation: moveBar 1.5s linear infinite;
  border-radius: 5px;
}

@keyframes moveBar {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

button .fa-angle-right {
  transition: transform 0.3s ease;
}

button[aria-expanded="true"] .fa-angle-right {
  transform: rotate(90deg);
}