gecko-dev/devtools/client/themes/layout.css

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#layout-container {
  height: 100%;
  width: 100%;
  overflow: auto;
}

/**
 * Grid Container
 */

#layout-grid-container {
  margin: 5px;
}

/**
 * Grid List
 */

.layout-grid-list-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.layout-grid-list-container > span {
  font-weight: bold;
  margin-bottom: 3px;
}

#layout-grid-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

#layout-grid-list li {
  padding: 4px 0;
}

/**
 * Container when no grids are present
 */

.layout-no-grids {
  font-style: italic;
  text-align: center;
  padding: 0.5em;
}