.progress-bar {
  position: relative;
  width: 100%;
  height: 20px;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid hsl(0, 0%, 100%, 0.5);
}

.progress-fill {
  height: 100%;
  width: 0;
  background-color: #4CAF50;
  transition: width 0.5s ease-in-out;
  animation: oscillateFill 3s infinite linear;
}