.curtain-container{z-index:9999;pointer-events:none;width:100%;height:100%;display:flex;position:fixed;inset:0;overflow:hidden}.curtain{will-change:transform;background:#000;width:50%;height:100%;transition:transform 2s ease-in-out}.left,.right{transform:translate(0%)}.open-left{transform:translate(-100%)}.open-right{transform:translate(100%)}