Each box below sets only font-size: 24pt; line-height: normal - no explicit line-height. The used value is resolved from that font's own ascent/descent/line-gap metrics (CSS 2.1 §10.8.1), matching how browsers do it, so it varies by font rather than being a flat multiplier of font-size. The shaded background is exactly one line box tall, so its height relative to the glyphs shows each font's own leading.