> <sup> and <sub> has the problem that they change the line height. So if you have an paragraph and one line contains "Nice ground with 42 m² grass" then that l

> <sup> and <sub> has the problem that they change the line height. So if you have an paragraph and one line contains "Nice ground with 42 m² grass" then that line is taller than all the other lines, which makes it rather ugly. normalize.css fixed this problem by setting the line-height to 0 and using position relative. https://github.com/necolas/normalize.css/blob/master/normalize.css#L125 https://github.com/necolas/normalize.css/blob/master/normali...