materio-base-d7/sites/all/modules/examples/render_example/render_example.css

.render-array { 
    border: 2px solid black; 
    margin-top: 10px;
    padding-left: 5px;
    padding-top: 5px;
}

.render-header {
  font-size: large;
  font-style: italic;
}

.unrendered-label {
  font-style: italic;
  margin-top: 10px;
}

.rendered {
  background-color: lightblue;
}