Back in the old days before react and the like took off Jon Duckett's https://htmlandcssbook.com/ https://htmlandcssbook.com/ used to be a common recommendation

Back in the old days before react and the like took off Jon Duckett's https://htmlandcssbook.com/ https://htmlandcssbook.com/ used to be a common recommendation for people wanting to actually grok HTML. To be fair that's less of an quick guide and it's maybe dated in the javascript content(who uses jquery today) but it's a beautiful book that showcases how elegant html can be when attention is given to the actual markup.