chromium/chrome/test/data/web_apps/borderless_isolated_app/styles.css

/* Copyright 2023 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: blue;
}

@media (display-mode: borderless) {
  body {
    background: red;
  }
}

#draggable {
  app-region: drag;
  position: absolute;
  top: 100px;
  left: 100px;
  height: 10px;
  width: 10px;
}

#non-draggable {
  app-region: no-drag;
  position: relative;
  top: 5px;
  left: 5px;
  height: 2px;
  width: 2px;
}

#target {
  width: 100%;
  height: 33px;
}