chrome/browser/resources/chromeos/emulator/device_emulator.css

/* Copyright 2015 The Chromium Authors. All rights reserved.
   Use of this source code is governed by a BSD-style license that can be
   found in the LICENSE file. */

html,
body {
  height: 100%;
  width: 100%;
}

body {
  font-family: 'Roboto', Arial, Verdana, Helvetica;
  margin: 0;
}