*{margin:0;padding:0;box-sizing:border-box}html,body{overflow:hidden}.webgl{position:fixed;top:0;left:0;outline:none}#loading-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:#000;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:1000;transition:opacity .5s ease}#loading-screen.fade-out{opacity:0;pointer-events:none}.loader{border:5px solid #333;border-top:5px solid #fff;border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}