"Label" div should be using fixed width instead of variable width

On the donation pages (and perhaps all pages - though I've only checked Donation and Events), the "Label" div should probably be using a fixed-width of 150px or 200px, instead of the 15% that it is currently set to.

When I am viewing a donation page using the default garland theme, the * indicating a required field is put on the next line. If this were a fixed-width div, this wouldn't happen. If the user shrinks the browser window, the * and other text also falls to a second line, while there is still plenty of room on the right.

What do you guys think?

See screenshots.