:root {
  --main-content-width: 800px;
  --gap: 8px;
  --gap-half: calc(var(--gap) / 2);
  --gap-double: calc(var(--gap) * 2);
  --border-radius: 4px;
  --font-size: 16px;
}

html,
body {
  padding: 0;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

* {
  box-sizing: border-box;
}