body {
  margin: 0;
  padding: 0;
  display: flex;
  height: 100vh;
  font-family: Arial, sans-serif;
}
#controls {
  width: 200px;
  padding: 20px;
  background: #f0f0f0;
  border-right: 1px solid #ccc;
}

#canvas2d-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #eee;
  overflow: hidden;
  position: relative;
}
#canvas-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #eee;
  overflow: hidden;
  position: relative;
}
.slider-container {
  margin-bottom: 20px;
}
.slider {
  width: 100%;
}