canvas {
  margin: auto;
  box-shadow: 0 0 10px gray;
  background-color: white;
}

body {
  background-color: #ffe;
}

.code {
  white-space: pre;
  font-family: monospace;
  font-size: 0.8rem;
}

.glsl_source {
    border-left: 1px solid green;
    margin: 0.5em 1em;
    padding: 0.2em 1em;
}

.hidden {
  display: none;
}

#error {
  background-color: #ffd0d0;
  margin-top: 1em;
  padding: 0.5em 1em;
}