gecko-dev/accessible/jsat/AccessFu.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/. */

#virtual-cursor-box {
  position: fixed;
  border: 1px solid orange;
  pointer-events: none;
  display: none;
  border-radius: 2px;
  box-shadow: 1px 1px 1px #444;
  display: none;
  z-index: 10;
}

#virtual-cursor-box.show {
  display: block;
}

#virtual-cursor-box > div {
  border-radius: 1px;
  box-shadow: inset 1px 1px 1px #444;
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#announce-box {
  position: fixed;
  width: 7.5em;
  height: 5em;
  top: calc(100% - 50% - 2.5em);
  left: calc(100% - 50% - 3.75em);
  pointer-events: none;
  display: table;
  font-size: 28pt;
  font-weight: 700;
  color: orange;
  background-color: black;
  border-radius: 0.25em;
}

#announce-box:not(.showing) {
  opacity: 0.0;
  -moz-transition: opacity 0.4s linear;
}

#announce-box.showing {
  opacity: 1.0;
  -moz-transition: opacity 0.2s linear;
}

#announce-box * {
  text-align: center;
  display: table-cell;
  vertical-align: middle;
}