look.css

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow: hidden;
  font-family: monospace;
}

.loading {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: black;
  background: white;
}

.dbg {
  white-space: break-spaces;
}

.hide-on-blur {
  opacity: 0;
}

.hide-on-blur:hover {
  opacity: 1;
}

.control-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  overflow: auto;
  color: white;
  padding: 8px;
  background: #222;
}

.control-panel .ui-item {
  margin: 0 0 8px 0;
}

.control-panel .section {
  margin: 0 0 8px 0;
  border-bottom: 1px solid white;
  padding: 0 0 8px 8px;
}

.control-panel .ui-item input {
  float: right;
}

.control-panel .ui-item .caption {
  margin: 0 8px 0 0;
}

.control-panel .ui-item .button {
  cursor: pointer;
  display: inline-block;
}

.control-panel .ui-item .button:hover {
  font-weight: bold;
}

.control-panel .ui-item .narrow-32 {
  width: 32px;
}

.control-panel .ui-item .narrow-48 {
  width: 48px;
}

.control-panel .ui-item .narrow-64 {
  width: 64px;
}