message: Remove "division"
diff: @@ -27,7 +27,7 @@ const smallMixin = css`
  ol,
  code,
  pre {
  - font-size: 0.9rem / em;
  + font-size: 0.9rem;
  }
  h1,
  @@ -53,7 +53,7 @@ export const mixin = css`
  ${baseMixin}
  p, li, ol {
  - font-size: 1.05rem/em;
  + font-size: 1.05rem;
  }
  ul,
  