4 ms·It aligns perfectly for me. Must've been mostly tested on Firefox.by jeroenhd 3y agoIt aligns perfectly for me. Must've been mostly tested on Firefox.38 3y agoI am on Firefox...marwis 3y agoDoesn't work on Chrome too. Needs .linenumbers { line-height: 12pt } but I think vertical line spacing within text node cannot be precisely controlled and is browser dependent.