Thanks for noticing that.

I put it here so it can be re-used as this is a pretty useful thing to have (`u-` stands for utility). It's actually also used in another module right now (expandable trails).

As a matter of fact I just released another change: importing `_forms.scss` in the `head.scss`. These styles should be very basic and easily overridable. For more advanced form styling, the rules should go in other files (imported in `global.scss`).

I hope this makes sense, let me know what you think.