trace-viewer/tracing/tracing/ui/tracks/ruler_track.css

/* Copyright (c) 2012 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.
 */

.ruler-track {
  height: 12px;
}

.ruler-track.tall-mode {
  height: 30px;
}