Source/devtools/front_end/ui/emptyWidget.css

/*
 * Copyright (c) 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.
 */

.empty-view {
    font-size: 24px;
    color: rgb(75%, 75%, 75%);
    font-weight: bold;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}