* {
  margin: 0;
  padding: 0;
  text-align: center;
  background-color: rgb(255, 255, 255);
}

body {
  width: 100%;
  height: 100%;
  overflow: visible;
  padding: 0;
  margin: 0;
}

.loading-container {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: monospace;
}

.webgl-content {
}

/* Bar background */
.progress-bar {
  position: relative;
  width: 200px;          /* or whatever width you like */
  height: 4px;
  margin-top: 8px;
  background: #e0e0e0;  /* light grey track */
  overflow: hidden;
  border-radius: 2px;
}

/* Moving stripe */
.indeterminate {
  position: absolute;
  top: 0; left: -40%;
  width: 40%;
  height: 100%;
  background: #007acc; /* your accent color */
  animation: indeterminate 1.2s infinite;
}

@keyframes indeterminate {
  0%   { left: -40%; width: 40%; }
  50%  { left: 100%;  width: 40%; }
  100% { left: 100%;  width: 40%; }
}