menu.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/. */

menu {
  display: inline;
  padding: 0;
}

menu > menuitem::after {
  content: "►";
  float: right;
}

menu > menupopup {
  display: none;
}

menu > menuitem:hover + menupopup,
menu > menupopup:hover {
  display: block;
}

menupopup {
  position: fixed;
  z-index: 10000;
  background: white;
  border: 1px solid #cccccc;
  padding: 5px 0;
  background: #f2f2f2;
  border-radius: 5px;
  color: #585858;
  box-shadow: 0 0 4px 0 rgba(190, 190, 190, 0.8);
  min-width: 130px;
}

menuitem {
  display: block;
  padding: 0 20px;
  line-height: 20px;
  font-weight: 500;
  font-size: 13px;
  -moz-user-select: none;
  user-select: none;
}

menuitem:hover {
  background: #3780fb;
  color: white;
  cursor: pointer;
}

menuitem[disabled=true] {
  color: #cccccc;
}

menuitem[disabled=true]:hover {
  background-color: transparent;
  cursor: default;
}

menuitem[type=checkbox]::before {
  content: "";
  width: 10px;
  display: inline-block;
}

menuitem[type=checkbox][checked=true]::before {
  content: "✓";
  left: -8px;
  position: relative;
}

menuseparator {
  border-bottom: 1px solid #cacdd3;
  width: 100%;
  height: 5px;
  display: block;
  margin-bottom: 5px;
}

#contextmenu-mask.show {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
}