:root{--c-border:#a5a5a5;--c-text:#a5a5a5;--c-dark:#555;--c-bg:rgb(1, 1, 1);--c-bg-transparent:rgb(1, 1, 1, 0.3);--c-focus:#0053ba;--fontsize:0.75rem;--fontsize-small:0.625rem;--z-ui:100}body,html{font-family:Arial,Helvetica,sans-serif}body{margin:0;padding:0;font-size:var(--fontsize);background-color:var(--c-dark)}canvas{position:absolute;top:0;left:0;height:100vh;width:100%;display:block;z-index:-1}header{top:0;left:0;z-index:var(--z-ui);position:absolute;color:var(--c-text);opacity:.9;background:var(--c-bg-transparent);border-radius:5px}header>h1{margin-left:7px}nav{top:60px;left:0;z-index:var(--z-ui);position:absolute;color:var(--c-text);opacity:.9;background:var(--c-bg-transparent);border-bottom-right-radius:5px;display:flex;flex-direction:column}nav>button{margin-left:.5em}nav>hr{width:100%}nav>input[type=range]{margin-left:10px;margin-right:10px}nav>input[type=checkbox]{margin-left:10px;margin-right:10px;width:25px}footer{position:absolute;bottom:0;left:0;height:22px;width:100%;z-index:var(--z-ui);color:var(--c-text);opacity:.9;background:var(--c-bg-transparent);text-align:left;vertical-align:middle;font-family:'Courier New',Courier,monospace;overflow:hidden}footer>span{margin-left:.4em}footer>progress{-webkit-appearance:none}::-moz-progress-bar{background:0 0}::-webkit-progress-bar{background-color:transparent}::-webkit-progress-value{background:var(--c-dark)}footer>progress{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;margin-left:5px;margin-right:2px;width:300px;height:10px}#spanProgress{margin-left:0;min-width:none;padding-left:0}hr{border-top:1px solid var(--c-border);border-left:none;border-right:none;border-bottom:none;padding:none;margin-top:.4em;margin-bottom:.5em}button{border:1px solid transparent;border-radius:2px;outline:0;padding:0 .2em;margin:.1em .2em;height:2.2em;background:0 0;color:var(--c-text);cursor:pointer;transition:background 50ms ease-in-out,transform 50ms ease;display:flex;align-items:center}button:hover{border:1px solid var(--c-border)}button:active{transform:scale(.99)}input[type=file]{width:1px;height:1px;position:absolute;top:-10px;left:-10px}