ruby rt{margin-top:6px;margin-bottom:0;font-size:10px;visibility:hidden}.show-rt ruby rt{visibility:visible;color:inherit}mark{color:white!important;font-size:14px;border-radius:6px;padding:4px}@media (min-width:1536px){ruby rt{margin-top:24px;margin-bottom:4px;font-size:12px}}body mark{color:#333!important}