#alert{position:absolute;display:flex;justify-content:center;align-items:center;width:100%;height:100%;font-size:xx-large;z-index:2;padding:0 1ch}.error{color:red}canvas#main{width:100%;height:100%;background-color:#000}body{width:100vw;height:100vh;margin:0;overflow:hidden}#info{position:fixed;padding:2px;color:#fff;opacity:50%;font-family:monospace;transition:opacity .2s;&:hover{background-color:#000;opacity:100%}z-index:999}#chevron{height:1em;aspect-ratio:1;float:right;transform:rotate(180deg)}#chevron.collapsed{transform:rotate(0)}#content.collapsed{height:0;opacity:0}h1,h2{font-size:1em;display:inline}label{display:flex;align-items:center}label>span{margin-right:1ch}