html,
body {
  margin: 0;
  height: 100%;
  -webkit-overscroll-behavior: contain;
  -ms-overscroll-behavior: contain;
  overscroll-behavior: contain;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  overflow: hidden;
}

#sidebar {
  width: 250px;
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #f1f1f1;
  border: 1px solid #d3d3d3;
  overflow: hidden;
}

#sidebar-header {
  padding: 10px;
  cursor: move;
  z-index: 10;
  background-color: #2196f3;
  color: #fff;
  display: flex;
}

#sidebar-header-title {
  flex: 1;
}

#sidebar-header-button {
  cursor: pointer;
  flex: 0 0 20px;
}

#sidebar-content {
  overflow-y: auto;
  overflow-x: hidden;
}

#sidebar input[type="range"] {
  width: 240px;
  pointer-events: none;
}

#sidebar input[type="range"]::-webkit-slider-thumb {
  pointer-events: auto;
}

#sidebar input[type="range"]::-moz-range-thumb {
  pointer-events: auto;
}

#main {
  height: 100%;
  width: 100%;
  margin: 0;
  overflow: hidden;
}

#canvas {
  overscroll-behavior: contain;
}