.popup-overlay{position:fixed;top:0;width:100%;height:0vh;z-index:-1;justify-content:center;align-items:center;opacity:0;overflow:hidden;transition:opacity 0.4s ease-in-out;-moz-transition:opacity 0.4s ease-in-out;-webkit-transition:opacity 0.4s ease-in-out}.popup-overlay.show{display:flex;opacity:1;z-index:9999;height:100vh}