.bj-scrolling-bg{position:relative;width:100%;height:400px;overflow:hidden;--fade-width:150px;--fade-color:#fff}
.bj-scrolling-bg-track{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;will-change:transform}
.bj-scrolling-bg-image{flex:0 0 100%;width:100%;height:100%;background-size:cover;background-position:center;background-repeat:no-repeat;opacity:.3}
.bj-scrolling-bg-fade{position:absolute;top:0;bottom:0;width:var(--fade-width);pointer-events:none;z-index:1}
.bj-fade-left{left:0;background:linear-gradient(to right,var(--fade-color),transparent)}
.bj-fade-right{right:0;background:linear-gradient(to left,var(--fade-color),transparent)}