body {
  opacity: 0.90;
}

/*html {
--background:#aaa;
opacity: 1.0;
--pagebackgroundimage: url("https://media2.giphy.com/media/v1.Y2lkPTc5MGI3NjExamFzcXdicDV3MXBjM3J0MXYxbGwyajVpY2ZqdzkydDU1dHowbDN5ciZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/bG1oRM2Qp2kN3MTZCO/giphy.webp");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
}*/