.jumbotron, .navbar-inverse, #footer {
  position: relative;
  &:after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    opacity: .15;
    background-image: url(data:image/png;base64,[encoded data, 11696 characters]);
    background-image: none\9;
  }
  .container {
    position: relative;
    z-index: 2;
  }
}
.jumbotron-icon:after { opacity: .1; }
