body {
  background-color: #777870;
}

.cover {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
}

.grain {
    background: url("noise.jpg");
    background-size: cover;
    z-index: 99;
    opacity: 0.1;
    -webkit-transition: ease 0.2s;
    transition: ease 0.2s;
    pointer-events: none;
}