extension {
  -moz-binding: url("chrome://mozapps/content/extensions/extensions.xml#extension");
  -moz-box-orient: vertical;
}

extension[state="downloading"] {
  -moz-binding: url("chrome://mozapps/content/extensions/extensions.xml#extension-downloading");
}

extension[itemType="theme"] {
  -moz-binding: url("chrome://mozapps/content/extensions/extensions.xml#theme");
}

extension[itemType="theme"][state="downloading"] {
  -moz-binding: url("chrome://mozapps/content/extensions/extensions.xml#theme-downloading");
}

.themePreviewArea {
  width: 0px;
}

extension[availableUpdateURL="none"] .extension-install-button-box {
  display: none;
}

.extension-install-button-box {
  display: -moz-box;
}