*{margin:0;padding:0;box-sizing:border-box}body{width:240px;height:320px;overflow:hidden;background-color:#000;font-family:Arial,sans-serif}#game-container{width:240px;height:320px;display:flex;justify-content:center;align-items:center;background-color:#000}canvas{display:block;width:240px!important;height:320px!important}*{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}::-webkit-scrollbar{display:none}html{scrollbar-width:none;-ms-overflow-style:none}