.middle {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  position: absolute;
}

.bar {
  width: 10px;
  height: 70px;
  display: inline-block;
  transform-origin: bottom center;
  border-top-right-radius: 20px;
  border-top-left-radius: 20px;
  box-shadow: 5px 10px 20px inset rgba(255, 255, 0, 0.8); /* Yellow box shadow */
  animation: loader 1.2s linear infinite;
}

.bar1 {
  animation-delay: 0.1s;
}

.bar2 {
  animation-delay: 0.2s;
}

.bar3 {
  animation-delay: 0.3s;
}

.bar4 {
  animation-delay: 0.4s;
}

.bar5 {
  animation-delay: 0.5s;
}

.bar6 {
  animation-delay: 0.6s;
}

.bar7 {
  animation-delay: 0.7s;
}

.bar8 {
  animation-delay: 0.8s;
}

@keyframes loader {
  0% {
    transform: scaleY(0.1);
    background: transparent;
    /* Change background to transparent */
  }

  50% {
    transform: scaleY(1);
    background: linear-gradient(
      to bottom,
      #ffd700,
      #ffff00
    ); /* Gradient from gold to yellow */
  }

  100% {
    transform: scaleY(0.1);
    background: transparent;
  }
}