The Vertical Form
There's no real positional styling going on in this form, it's merely padding, margin and width. All the text fields have been given a standard width to make them look neat, and the fieldsets have been given the same width + padding. It does look a bit stark on this page, but would be ideal for a left-column login or search box.
Note also, the first label in each fieldset has been given a class of "first". This is because if you place any margin on the legend element, it screws up in Mozilla (pushes the legend out of the top of the fieldset). So, I need to add margin top to the first element inside the fieldset, and first-child selectors don't work in IE :o]