4、This includes things like setting the margins on block level elements like paragraphs, headers, and lists to the same value as (or some multiple of) the base line-height setting for the site.
1、設定line-height（行高）等於height（高度）使文字垂直居中。
3、I know when I start studying something like typography it seems like every magazine or blog post is about typefaces and line-height, and measure.
2、It's great to see so many designs using good-sized margins to space elements apart, and extra line-height to aid on-screen reading.
