Vertical forms, not horizontal
Because users find it easier to complete forms from top to bottom rather than from left to right, you should use a vertical layout for your forms rather than use multi-columns.

“Strip away all the filler content from your website. Create a clean, lean website that focuses on exactly what your customers care most about.”
Gerry McGovern
Because users find it easier to complete forms from top to bottom rather than from left to right, you should use a vertical layout for your forms rather than use multi-columns.