*{margin:0;padding:0;box-sizing:border-box;-webkit-user-select:none;-moz-user-select:none;user-select:none}body{background-color:#feffed;background-image:linear-gradient(90deg,rgba(0,0,0,.05) 1px,transparent 0),linear-gradient(180deg,rgba(0,0,0,.05) 1px,transparent 0);background-size:24px 24px;font-family:monospace}