body {
  font-family: system-ui, Helvetica, sans-serif;
}
#container {
  width: 512px;
  margin: 0 auto;
  font-size: 14px;
}
#menu a {
  text-decoration: underline;
  color: black;
}
#menu {
  color: gray;
}
#menu span, a, #buttons button {
  margin: 0 2px;
}