html,body{margin:0;padding:0}.loading{background:#000;width:100%;height:100vh;position:absolute;top:0;left:0;z-index:10;display:flex;justify-content:center;align-items:center}.loading h1{color:#fff}.loaded{background:#000;width:100%;height:100vh;position:absolute;top:0;left:0;z-index:8;display:flex;justify-content:center;align-items:center}.loaded button{padding:15px 22px;font-size:22px}