@jpmorganchase/perspective-examples/build/demo.css

Perspective.js

/******************************************************************************
 *
 * Copyright (c) 2017, the Perspective Authors.
 *
 * This file is part of the Perspective library, distributed under the terms of
 * the Apache License 2.0.  The full license can be found in the LICENSE file.
 *
 */

perspective-viewer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}