Stop using `overflow: scroll` anywhere

[Diggsey]

Design Feature Request

Summary

Please stop using overflow: scroll anywhere and use overflow: auto instead.

These are used at least on code boxes, but there's no reason to use overflow: scroll anywhere.

Motivation

overflow: scroll causes scrollbars to always appear on windows and linux, even when the content is not scrollable, which is just a waste of screen space and ugly given the colourful theme.

Drawbacks

None, unless someone prefers useless scrollbars to appear?

[enzozus]

The code boxes in most (all?) places don't have a maximum height set, and in those cases the vertical scrollbars (in Chrome) and the ugly weird scrolling corner (in Firefox) are completely unnecessary and can be removed by using overflow-x: scroll instead of overflow: scroll.

When there is a longer code example and you really want to restrict the height for the sake of layout it might be better to have an expander button to show all the code; this allows using the full height of the screen instead of scrolling around in a little box.

Also agree with using auto instead of scroll. This gets rid of even the horizontal scrollbar in many places. Carefully adjusting the code examples should get rid of all the scrollbars actually, but it's probably a good idea to keep overflow-x: auto around when the width is restricted.

[jay-aye-see-kay]

I was going to raise basically the same issue, on desktops that aren't macOS overflow: scroll shows scroll bars all the time and they're a waste of space. As far as I can see the site only has this issue on code tags so could be fixed by changing https://github.com/rust-lang/beta.rust-lang.org/blob/d9ce21591dfaee3b431efca3df80701177339b00/src/styles/app.scss#L31 to overflow: auto;.

Really like the new site, awesome work

[meven]

Under linux + firefox
currently : overflow: scroll

overflow : auto

[chriskrycho]

I agree: that definitely doesn't look great! If one of you would like to open a PR, I'll merge it! Otherwise, I'll get to it either this afternoon or sometime over the next week.

[chriskrycho]

Resolved in #522.