html {
  background: url('../img/sub_bg.jpg') no-repeat center center fixed #070103;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/img/bg.jpg', sizingMethod='scale');
  -ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/img/bg.jpg', sizingMethod='scale')";
}