.scanlines {
  overflow: hidden;
  z-index: 10;
}
.scanlines:before, .scanlines:after {
  display: block;
  pointer-events: none;
  content: '';
  position: absolute;
}
.scanlines:before {
  width: 100%;
  height: 1px;
  z-index: 2147483649;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0.75;
  -webkit-animation: scanline 6s linear infinite;
          animation: scanline 6s linear infinite;
}
.scanlines:after {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2147483648;
  background: -webkit-linear-gradient(top, transparent 50%, rgba(0, 0, 0, 0.3) 51%);
  background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.3) 51%);
  background-size: 100% 2px;
  -webkit-animation: scanlines 1s steps(60) infinite;
          animation: scanlines 1s steps(60) infinite;
}

/* ANIMATE UNIQUE SCANLINE */
@-webkit-keyframes scanline {
  0% {
    -webkit-transform: translate3d(0, 200000%, 0);
            transform: translate3d(0, 200000%, 0);
  }
}
@keyframes scanline {
  0% {
    -webkit-transform: translate3d(0, 200000%, 0);
            transform: translate3d(0, 200000%, 0);
  }
}
@-webkit-keyframes scanlines {
  0% {
    background-position: 0 50%;
  }
}
@keyframes scanlines {
  0% {
    background-position: 0 50%;
  }
}