How would you create an input box with individual boxes per letter?

Screen Shot 2021-06-25 at 6.29.52 am1874×456 267 KB

Hi folks,

I need to recreate an offical form which has input boxes like above (ie like on surname etc).
So each letter is in it own little box, no there are two ways this will be filled in, manually and also with information from a database.

Does anyone have any idea what would be the best way to create these individual boxes within an input ?