* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --cl-black: #000;
  --cl-white: #fff;
  --cl-page-background: #eee;
  --cl-panel-edge: #ccc;
}

body {
  overflow: hidden;
  color: #444;
  touch-action: none;
  user-select: none;
}