#app-container{position:relative;width:100%;height:100vh;overflow:hidden}#loading-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-family:Arial,sans-serif;font-size:1.5rem;text-align:center;z-index:100}#progress-bar{position:absolute;top:55%;left:50%;transform:translate(-50%,-50%);width:200px;height:4px;background:#fff3;z-index:100}#progress-bar:after{content:"";position:absolute;top:0;left:0;height:100%;width:0%;background:#fff;transition:width .3s ease}canvas{display:block;width:100%;height:100%}