I'm a little confused here. What's the theoretical difference between an inline element and other elements. I know from experience that they display totally different, but I don't know why.

Thanks,
Nathan

It's not theoretical at all, there are some elements classified as inline and others classified as block level.

If you want to read an explanation start here: http://www.autisticcuckoo.net/archiv...ck-vs-inline-1

Inline Elements are elements that only contain other inline elements. They do not typically begin with a new line.Inline elements are also known as 'text-level elements' or 'phrase elements'. Because they cannot contain Block Level Elements, inline elements are considered to define smaller structures than block-level elements.