Is there a size difference between css pixels and html width pixels?

css html pixels

[thewpfan]

Is there a size difference between css pixels and html width pixels? The question I ask is because on the sidebar of www.giantmango.com the embed code I used from flickr and vimeo`s width are 220 and the search input bar in css is set to 220px, but when viewed through a browser they have different lengths?

[rocknbil]

No pixels are pixels. It's possible something is overriding the 220px set on one of the elements, inspect the element in FireBug to see where it's being assigned.

[thewpfan]

thank you