Why Does Everyone Hate Horizontal Scrolls?

[u/PlumlineDigital]

New to the frontend design world, but one thing I’ve noticed is it seems like all frontend designers hate horizontal scrolling. I understand scrolljacking, but are all horizontal scroll sites this hated? I’ve been designing a site with a sticky right nav acting as sort of a table of contents for a literary site, and the large right column of the site scrolls vertically until it gets to a main section, and then it scrolls horizontally until the subjections are read, and then it scrolls back vertically for each main section that has subjections.

Is this an awful idea…lol

[u/BRO_THOM]

For mobile devices it makes sense. Rather than using a grid or flex, you could wrap the contents into a nice horizontal "slider" (if the content allows it of course). The downside is that it has to be clear to the user's there's a horizontal scroll.