:root {
  font-size: 12px;
  font-family: monospace;
  --color: #FF0000;
  --bg: #FFFFFF;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  overflow: hidden;
}

body {
  width: 100vw;
  height: 100vh;
  color: var(--color);
  background-color: var(--bg);
}

a {
  color: inherit;
}