Giới thiệu VLXX :root --mx: 24px; --lh: 1.65; --fg: #111; --muted:#555; body font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: var(--fg); line-height: https://oisiyuey428779.wikiexcerpt.com/user