.bg-holder > .bg-mask,
.bg-holder > .bg-mask-darken,
.bg-holder > .bg-mask-lighten,
.bg-holder > .bg-mask-white,
.bg-holder > .bg-mask-color,
.bg-holder > .bg-mask-color-invert {
  width: 100%;
  height: 100%;
  z-index: 5;
  opacity: 0.25;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=25)";
  filter: alpha(opacity=25);
  background: #000;
}

body {
  overflow-y: scroll;
  overflow-x: hidden; 
  -webkit-overflow-scrolling: touch;
}