src/third_party/devtools/front_end/sources/navigatorView.css

/*
 * Copyright 2016 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.
 */

.navigator-toolbar {
    border-bottom: 1px solid #ccc;
    padding-left: 8px;
}