.stairs .transition-container{position:fixed;width:100vw;height:100vh;display:flex;left:0;top:0;pointer-events:none;z-index:2}.stairs .transition-container div{position:relative;height:100%;width:100%;background-color:#000}.stairs .transition-background{position:fixed;width:100%;height:100vh;background-color:#000;z-index:1;pointer-events:none;top:0;left:0}