body.modo-contraste {
  background-color: #000 !important;
  color: #fff !important;
}

body.modo-contraste a,
body.modo-contraste .menu a,
body.modo-contraste .widget,
body.modo-contraste .content,
body.modo-contraste .header,
body.modo-contraste .footer {
  background-color: #000 !important;
  color: #fff !important;
  border-color: #fff !important;
}

body.modo-contraste img,
body.modo-contraste video {
  filter: grayscale(100%) contrast(150%);
}