html,body{-webkit-user-select:none;user-select:none;overscroll-behavior-y:contain;-webkit-tap-highlight-color:transparent;width:100%;height:100%;margin:0;padding:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;overflow:hidden}*{box-sizing:border-box}img{-webkit-user-drag:none}