???
The word 'literally' is abused by teenyboppers with a poor command of English, but here it applies:
There is
literally nothing reputable that justifies a flat earth. Nothing. Nothing that puts the opinion of some 1997 HTML website to centuries of defined Catholic dogma. If flat earth were defined, infallible Catholic dogma, it would've been in a Papal Bull written in 1400, not some layman in America's unfounded opinion in AD 2017.
If flat earth were defined Catholic dogma, then truth would lie in the hands of several laymen hiding behind a computer with useless opinions, not solemnly defined Catholic doctrine.