.hero-image {  position: relative; }

.hero-image:before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1;
    background-image: url('/static/img/mj_bars.png');
    background-position: center;
   opacity: 0.25;
}

.hero-content {
    position: relative; 
    z-index: 2;
}​