Remove old style rules

Author: snuggs

styles/typography.css

@@ -1064,12 +1064,6 @@ body > nav::before {}
   padding: var(--margin-collapse-bugfix) auto;
 }
 
-:is( nav, [role=navigation] ) :is( details, summary ):focus-within {
-  background: pink;
-}
-:is( nav, [role=navigation] ) :is( dl, ol, ul, details ) summary {
-  font: inherit;
-}
 
 /* SVG ================================================================== */
 svg {