.gva-parallax-background {
  position: relative;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
  -o-box-sizing: border-box;
  overflow: hidden;
}

.gva-parallax-background .bb-inner{
  position: relative;
  z-index: 9;
}
.gva-parallax-background .gva-parallax-inner {
  height: 150%;
  width: 100%;
  pointer-events: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 1;
  background-attachment: scroll;
  background-color: transparent;
  background-image: inherit;
  background-size: cover;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  z-index: 0;
  background-position: 50% 0;
}