:root{--gap:24px;--content-gap:20px;--nav-width:1024px;--main-width:720px;--Header-height:60px;--footer-height:60px;--radius:8px;--theme:rgb(255, 255, 255);--entry:rgb(255, 255, 255);--primary:rgb(......024px;--main-width:720px;--header-height:60px;--footer-heigh...aside,figcaption,figure,footer,header,hgroup,main,nav,section,ta...