Apparently (I can&#x27;t check right now), HN uses &#x27;line-height: normal&#x27;. If that&#x27;s not readable for you, complain to your browser vendor; they can interpret that value however they want. And, in some ways, it&#x27;s preferable to specifying a fixed value; it can - and should - be optimised for the specific font. I&#x27;m not sure whether the spec allows it, but - in theory - your browser could also optimise &#x27;normal&#x27; for line-length.