.op-banner-item{position:relative}.op-description{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);padding:20px;background-color:#fff;border-radius:5px;text-align:center}.op-banner-background{background-size:cover;background-position:center;padding-bottom:50%;background-repeat:no-repeat}.parallax-box{background-attachment:fixed}