chromium/chrome/test/data/extensions/api_test/content_scripts/css_injection/content_styles.css

/* Copyright 2014 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file. */

body {
  background-color: blue;
}

body #div1 {
  background-color: blue;
}

body #div2 {
  background-color: blue;
}

body #div3 {
  background-color: blue;
}