.watermark{
  position: relative;
  display: block;
}

.watermark-inline-block{
  display: inline-block;
}

.watermark:before {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: url("../images/fpo.png") repeat center transparent;
    z-index: 2;
    content: "";
    overflow: hidden;
    opacity: .1;
}