three.js/manual/resources/threejs-lessons.css

/* Licensed under a BSD license. See ../license.html for license */

html, body {
  background-color: #aaa;
  font-family: Sans-Serif;
}

canvas {
  background-color: #fff;
  border: 1px solid black;
}

#uiContainer {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 3;
}

.gman-slider-label {
  float: left;
  gbackground-color: green;
}
.gman-slider-value {
  float: right;
  gbackground-color: blue;
}
.gman-slider-upper {
  gbackground-color: yellow;
  height: 1.5em;
}
.gman-slider-outer {
  gbackground-color: purple;
  height: 2.5em;
}
.gman-slider-slider {
  font-size: x-small;
  gbackground-color: red;
}

/* styles to apply if in an iframe */

body.iframe {
  width: 100%;
  height: 100%;
  margin: 0px;
  padding: 0px;
  overflow: hidden;
}

.iframe>.description {
  display: none;
}

.iframe>canvas {
  width: 100%;
  height: 100%;
}

.iframe canvas {
  border: none;
}

.iframe>#example {
  width: 100%;
  height: 100%;
}