enhance prose


[[CONSIDER]]
prose-lead:{utility}	[class~="lead"] 
prose-em:{utility}	em
prose-kbd:{utility}	kbd
prose-code:{utility}	code
prose-pre:{utility}	pre
prose-a:{utility}	a
prose-blockquote:{utility}	blockquote

prose-figure:{utility}	figure
prose-img:{utility}	img
prose-video:{utility}	video