Form elements too long for Opera

With both sidebars enabled input.form-text, input.form-file and some select lists are too long for Opera (some screenshots below).

Could be fixed with a blanket width but this will cause issues with some specific form elements such as the password strength meter.

E.g we could do this:

input.form-text,
input.form-file,
select.form-select {
  width: 75%;
}

But we need to test this out a lot and make sure we account for any special cases - or we go the other way around and special case only those that we find that are too long - either way its special casing and will probably break down at some stage...