html.error-page body {
  background-color: #000 !important;
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
}

html.error-page .error-code,
html.error-page .error-message,
html.error-page .sp-module-title,
html.error-page .mod-custom,
html.error-page .mod-custom p {
  color: #ffffff !important;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}