I often wonder why was the marquee tag deprecated

Because tags shouldn't dictate style.

It just moved:

https://w3schools.in/css3/...

It was gone in a <blink> of an eye.

@Demolishun Never link that hellhole of a site again. The original w3schools and all its imitators are garbage.

@kescherRant Heh, I thought I linked w3c, doh!

@kescherRant but there are still lots of tags that include some sort of style, like b, u, i.
other tags have a general basic style like div is by default always width:100%

anyway, marquee still works kinda everywhere despite being deprecated since 2008 at least

@ZioCain Yes. That's why some sites unset any browser styles before applying their own set of CSS rules.

Also, things like the <em>phasis tag exist.

Em, b, u, i, even though they control style, still have a semantic meaning. They all emphasize text in some way. If only visual aspect is important use CSS. If you have something to point out differently in meaning use html.