.scroll-container{background-color:#302f2f;height:400vh;position:relative}.panel{z-index:4;width:100%;height:100vh;position:fixed;top:0;left:0}.panel h1{color:#fff;margin:0;font-size:4rem}.panel-1{z-index:1}.panel--offscreen{transform:translateY(100%)}.panel-2{z-index:2}.panel-3{z-index:3}.panel-4{z-index:4}