.App{width:100vw;height:100vh;position:relative}.crosshair{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:20px;font-weight:700;pointer-events:none;z-index:1000;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.instructions{position:absolute;bottom:20px;left:50%;transform:translate(-50%);color:#fff;font-size:14px;text-align:center;background:#00000080;padding:10px 20px;border-radius:5px;pointer-events:none;z-index:1000;-webkit-user-select:none;user-select:none}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;overflow:hidden}body{background:#000}