html,body{margin:0;-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}html,body,button{font-family:Courier New,Courier,monospace}*{user-select:none;box-sizing:border-box;color:#fff}h1,h2,h3,h4,h5,h6,p{margin:0}