.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;z-index:0;background-position:50% 0;}.bg-size-cover{background-size:cover;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;}.bg-size-contain{background-size:contain;-webkit-background-size:contain;-moz-background-size:contain;-o-background-size:contain;}