.fwb-bg {
  background-repeat: no-repeat;
  background-position: center top;
  -webkit-background-size: cover;
  background-size: cover;
  bottom: 0;
  left: 0;
  overflow: hidden;
  position: absolute;
  right: 0;
  text-align: center;
  top: 0;
  z-index: 0;
}
.fwb-bg .overlay {
  background: #000;
  height: 100%;
  opacity: .2;
  filter: alpha(opacity=20);
  width: 100%;
}